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December 7, 2011

Winter weather advisory tonight

Update 2: The northern part of Baltimore County is still under winter weather advisory with 1-2 inches in the forecast.

Update: The winter weather advisory has been cancelled.

Check out our latest weather story on The Breaking News blog. Forecasters are calling for 2 inches of rain, with a flood watch in effect until tonight.

There is also a winter weather advisory for the area. From the National Weather Service:

"WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 3 AM EST THURSDAY... * PRECIPITATION TYPE...RAIN CHANGING TO LOCALLY HEAVY WET SNOW. * ACCUMULATIONS...1 TO 2 INCHES. 2 TO 4 INCHES ACROSS THE HIGHER ELEVATIONS. * TIMING...RAIN CHANGES TO SNOW IN THE LATE EVENING. HEAVIEST SNOW AROUND MIDNIGHT. * TEMPERATURES...FALLING TO THE LOW TO MID 30S. * WINDS...NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 40 MPH. "

Posted by Kim Walker at 11:33 AM | | Comments (0)
Categories: Watches and warnings, Winter weather
        

September 23, 2011

Flash Flood Warning for Baltimore & vicinity

A band of torrential rain has reached Baltimore and it's surrounding counties, with rainfall amounts of more than 4 inches an hour at times. The heaviest rain should be brief, but will cause urban flooding. 

The National Weather Service has issued a Flash Flood Warning for the city and surrounding counties:

"...BRIEF VERY HEAVY RAIN TO AFFECT BALTIMORE...HOWARD...ANNE
ARUNDEL...AND PRINCE GEORGES COUNTIES...AND BALTIMORE CITY...

"AT 1219 PM EDT...DOPPLER RADAR INDICATED AN AREA OF TORRENTIAL RAIN
CENTERED NEAR FORT MEADE...MOVING NORTH AT 25 MPH. RAINFALL UP TO AN
INCH IN A HALF HOUR IS POSSIBLE...WHICH WILL CAUSE PONDING OF WATER
ON ROADWAYS. IF MORE HEAVY RAIN DEVELOPS BEHIND THIS...FLASH
FLOODING WILL BECOME A CONCERN. REMAIN ALERT FOR POSSIBLE WARNINGS.

"LOCATIONS IMPACTED INCLUDE GEORGETOWN...JESSUP...SAVAGE...ELKRIDGE...
HANOVER...ILCHESTER...CATONSVILLE...BEECHFIELD...OELLA AND ARBUTUS."

Posted by Frank Roylance at 12:53 PM | | Comments (0)
Categories: Watches and warnings
        

August 27, 2011

Flood Warning issued for Lower Shore counties

Flood Warnings have been posted for the Lower Eastern Shore counties of Maryland, including Worcester, Wicomico, Somerset and Dorchester. The northern section of Accomack County on Virginia's Eastern Shore, is also included.

The warning means that flooding is imminent or already occurring. Heavy rainfall had already dumped 2 to 4 inches on the region. Another 5 to 8 inches on top of that is expected before Hurricane Irene departs on Sunday. The NWS says:

"EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

"DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND
."

Posted by Frank Roylance at 1:01 PM | | Comments (1)
Categories: Hurricanes, Watches and warnings
        

July 11, 2011

Heat Advisory posted for Tuesday as temps near 100

With forecasts calling for highs for Baltimore near 100 degrees Tuesday, the National Weather Service has posted a Heat Advisory from Harford County to Montgomery and south to the Potomac River. Heat Index values will reach 102 to 106 degrees.

"A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES
IS EXPECTED. THE COMBINATION OF HOT TEMPERATURES AND HIGH
HUMIDITY WILL COMBINE TO CREATE A SITUATION IN WHICH HEAT
ILLNESSES ARE POSSIBLE. DRINK PLENTY OF FLUIDS...STAY IN AN
AIR-CONDITIONED ROOM...STAY OUT OF THE SUN...AND CHECK IN
ON RELATIVES AND NEIGHBORS.

"TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE.
WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO EARLY
MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT
EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE
FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER.

"TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY
AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT
REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS.
ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND
SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 9 1 1."

 

Posted by Frank Roylance at 1:35 PM | | Comments (0)
Categories: Forecasts, Watches and warnings
        

June 7, 2011

Heat Advisories posted for Central Maryland

The National Weather Service has posted Heat Advisories for Central Maryland, effective from noon through 8 p.m. Wednesday. The forecast says temperatures will be in the mid-90s, with Heat Index values - a measure of the expected combined effect of heat and humidity - as high as 105 degrees.

"A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES
IS EXPECTED. THE COMBINATION OF HOT TEMPERATURES AND HIGH
HUMIDITY WILL COMBINE TO CREATE A SITUATION IN WHICH HEAT
ILLNESSES ARE POSSIBLE. DRINK PLENTY OF FLUIDS...STAY IN AN
AIR-CONDITIONED ROOM...STAY OUT OF THE SUN...AND CHECK IN
ON RELATIVES AND NEIGHBORS.

"TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE.
WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO EARLY
MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT
EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE
FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER."

Posted by Frank Roylance at 2:18 PM | | Comments (1)
Categories: Heat waves, Watches and warnings
        

Code Red Heat Alert posted for Weds., Thurs.

Baltimore's Health Department has declared Wednesday and Thursday - June 8 and 9 - Code Red Heat Alert days in the city.

That means the city will open 11 cooling centers to help residents without access to air conditioning a chance to cool off and rehydrate.

The Community Action Program will operate five centers around the city. These centers will be open from 9:00 a.m. to 7:00 p.m. on Wednesday and Thursday:

Northern Community Action Center -- 5225 York Road

Southern Community Action Center -- 606 Cherry Hill Road (inside the shopping center 2nd floor)

Northwest Community Action Center -- 3939 Reisterstown Road

Southeastern Community Action Center -- 3411 Bank Street

Eastern Community Action Center – 1400 E. Federal Street

The Health Department’s Office of Aging and CARE Services will operate six additional cooling centers. These centers will be open from 9:00 a.m. to 7:00 p.m. Wednesday and Thursday:

Waxter Center -- 1000 Cathedral Street

Oliver Center -- 1700 Gay Street

Sandtown-Winchester Center -- 1601 Baker Street

Hatton Center -- 2825 Fait Avenue

John Booth -- 229 1/2 S. Eaton Street

Zeta Center -- 4501 Reisterstown Road

Posted by Frank Roylance at 12:55 PM | | Comments (0)
Categories: Watches and warnings
        

May 23, 2011

Severe Storm Warning moves to Howard, PG

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HOWARD COUNTY IN CENTRAL MARYLAND...
  MONTGOMERY COUNTY IN CENTRAL MARYLAND...
  PRINCE GEORGES COUNTY IN CENTRAL MARYLAND...

* UNTIL 700 PM EDT

* AT 613 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING HAIL UP TO THE SIZE OF
  QUARTERS AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
  LOCATED NEAR BOYDS...OR NEAR POOLESVILLE...AND MOVING EAST AT 20
  MPH.

* LOCATIONS IMPACTED INCLUDE...

  BOYDS...
  GERMANTOWN...
  NORTH POTOMAC...
  GAITHERSBURG...
  GERMANTOWN...
  MONTGOMERY VILLAGE...
  ROCKVILLE...
  ASPEN HILL...
  OLNEY...

Also, the Severe Thunderstorm Watch has been canceled west of Frederick County, but extended to 8 p.m. in the I-95 corridor.

Posted by Frank Roylance at 6:16 PM | | Comments (0)
Categories: Watches and warnings
        

Severe T-storm moves toward Montgomery, Frederick

A Severe Thunderstorm Warning has been posted until 6 p.m. for parts of Mongtomery and Frederick counties, and the storm is moving east at 25 mph. The storm could produce large hail and winds to 60 mph. Here's more from the NWS:

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR LOUDOUN...MONTGOMERY AND FREDERICK COUNTIES...

AT 521 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HAIL UP TO THE
SIZE OF QUARTERS AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM
WAS LOCATED NEAR PURCELLVILLE...OR 7 MILES NORTHWEST OF LEESBURG...
MOVING EAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  LEESBURG...
  LUCKETTS...
  LANSDOWNE...
  TUSCARORA...
  ASHBURN...
  BEALLSVILLE...
  POOLESVILLE...
  DICKERSON...
  COUNTRYSIDE...
  BARNESVILLE...

Posted by Frank Roylance at 5:32 PM | | Comments (0)
Categories: Watches and warnings
        

May 18, 2011

Tornado Warning for Baltimore, Harford counties

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* TORNADO WARNING FOR...
  BALTIMORE COUNTY IN NORTHERN MARYLAND...
  HARFORD COUNTY IN NORTHERN MARYLAND...

* UNTIL 300 PM EDT

UPDATE: Extended to 3:30 p.m. Western Talbot and southwestern Queen Anne's County were also added to the tornado warning area.

Clay Stamp, emergency manager for Talbot County, said he had received no damage reports. "We had reports of what we think was a waterspout coming across the Choptank. It moved onto Oxford and dissipated." Elsewhere, he said, "The sky looked bad, but there was no rotation." 

Here's the earlier warning:

* AT 226 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  KINGSVILLE...OR 7 MILES SOUTHWEST OF BEL AIR...MOVING NORTHWEST AT
  25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  JARRETTSVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING AND AVOID WINDOWS. IF OUTDOORS OR IN A MOBILE HOME OR
VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

A tornado was also reported Tuesday night by a trained observer in Maugansville, in Washington County. "LARGE TREES DOWN AND SHINGLES OFF ROOF...," he said in a NWS report. No confirmation yet from weather service surveyors. I guess they're a bit busy today.

A Flash Flood Warning has also been issued for eastern Baltimore County and western Harford County as the same thunderstorm moves north and west along the county line. Details follow on the jump. The entire region is under a Severe Thunderstorm Watch:

 

Continue reading "Tornado Warning for Baltimore, Harford counties" »

Posted by Frank Roylance at 2:41 PM | | Comments (1)
Categories: Watches and warnings
        

May 16, 2011

No NOAA Weather Radio? Now, there's an app

You've thought about buying a NOAA Weather Radio. After all, it could wake you up in the middle of the night when a flash flood or tornado threatens, or some other weather emergency has come Weather Decision Technologiesup. But you've never quite taken the plunge.

Now, there's an app for that. Weather Decision Technologies, Inc., is marketing iMapWeather Radio for the iPhone, iPad and iPod Touch devices. (an Android version is due later this year.)

iMapWeather Radio provides weather alerts whenever watches or warnings are issued by the National Weather Service for your GPS-enabled device's location, or for any four other locations you select.  You'll get a series of alert beeps, then a brief description of the watch or warning, much like you get with a (now retro) NOAA Weather Radio.

The app is available for $9.99 through the iTunes store. But on Thursday, May 19, the first 100,000 people who download the app will get it for free.

I've never seen or used it, so I can't vouch for this app. If you have it, let us and our readers know what you think. 

Posted by Frank Roylance at 3:23 PM | | Comments (4)
Categories: Watches and warnings
        

April 28, 2011

Flash Flood Warnings for northwest suburbs

NWSThe National Weather Service has posted Flash Flood Warnings (dark red on map) for portions of Carroll, Baltimore and Harford counties, effective until 1:30 p.m. Thursday.

(Click here for updated watches and warnings.)

The warnings come on top of the Tornado Watch (yellow) that remains in effect west of the Chesapeake Bay and the Severe Thunderstorm Warning (orange) in parts of Southern Maryland.

That storm triggered a Tornado Warning in northern Virginia. that has since expired.

Here's the radar loop from Sterling.

Forecasters say they expect the worst of the storm threats will be out of the region by "mid-afternoon" as the cold front passes by.

Stream flooding and road closures in Maryland are already being reported from Antietam Creek in Leitersburg, Washington County. More flooding is reported from Emmitsburg, in northern Frederick County; also in Libertytown, Cavetown, Ballenger Creek. Trees are reported down in Barnesville and Bealesville, in Montgomery County. 

Posted by Frank Roylance at 10:42 AM | | Comments (0)
Categories: Watches and warnings
        

Tornado warning for area counties

The weather service has issued Tornado Warnings until 8:45 a.m. for portions of Carroll and Baltimore counties:

NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
814 AM EDT THU APR 28 2011

NWSTHE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* TORNADO WARNING FOR...
  BALTIMORE COUNTY IN NORTHERN MARYLAND...
  HARFORD COUNTY IN NORTHERN MARYLAND...

* UNTIL 845 AM EDT

* AT 809 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER
  NORTHWESTERN BALTIMORE COUNTY...OR 10 MILES EAST OF WESTMINSTER...
  MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  FREELAND...
  MARYLAND LINE...
  NORRISVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING AND AVOID WINDOWS. IF OUTDOORS OR IN A MOBILE HOME OR
VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS

Posted by Frank Roylance at 8:17 AM | | Comments (5)
Categories: Tornadoes, Watches and warnings
        

April 27, 2011

Tornado Warnings approach Baltimore

Tornado Warnings have been posted for portions of Baltimore's Suburbs. Funnel clouds have been reported in Howard and PG counties:

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR
BALTIMORE...HOWARD AND CARROLL COUNTIES...

AT 745 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS LOCATED NEAR ELLICOTT CITY...OR 8 MILES NORTH OF
COLUMBIA...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  RANDALLSTOWN...
  MILFORD MILL...

NWSPRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING AND AVOID WINDOWS. IF OUTDOORS OR IN A MOBILE HOME OR
VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

ALSO:

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR PRINCE
GEORGES AND ANNE ARUNDEL COUNTIES...

AT 742 PM EDT...A DEVELOPING TORNADO WAS LOCATED JUST EAST OF
BOWIE...MOVING NORTHEAST AT 40 MPH. THIS STORM HAS A HISTORY OF
PRODUCING TORNADOES.

LOCATIONS IMPACTED INCLUDE...
  MILLERSVILLE...
  GAMBRILLS...
  CROWNSVILLE...
  ODENTON...
  SEVERNA PARK...
  HERALD HARBOR...
  SHERWOOD FOREST...
  RIDGEWAY...
  PASADENA...
  RIVERDALE...
  SOUTH GATE...
  CHELSEA BEACH...

Let us know if you spot a tornado or see severe storm damage.

Posted by Frank Roylance at 7:52 PM | | Comments (1)
Categories: Tornadoes, Watches and warnings
        

Tornado Warning for Charles County

The National Weather Service has issued a Tornado Warning until 6:45 p.m. for Charles County in Southern Maryland. The warning also includes Stafford and Prince William counties in northern Virginia:

"THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* TORNADO WARNING FOR...
  STAFFORD COUNTY IN NORTHERN VIRGINIA...
  PRINCE WILLIAM COUNTY IN NORTHERN VIRGINIA...
  FAIRFAX COUNTY IN NORTHERN VIRGINIA...
  CHARLES COUNTY IN SOUTHERN MARYLAND...

* UNTIL 645 PM EDT

* AT 606 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR TRIANGLE...
  OR 6 MILES NORTH OF STAFFORD...MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  INDIAN HEAD...
  FORT BELVOIR...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING AND AVOID WINDOWS. IF OUTDOORS OR IN A MOBILE HOME OR
VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT...EITHER PARK AND STAY IN YOUR VEHICLE...OR ABANDON YOUR
VEHICLE AND LAY FLAT IN A LOW SPOT.'

Most of Maryland west of the Chesapeake remains under a Tornado Watch until  8 p.m. Wednesday.

Posted by Frank Roylance at 6:06 PM | | Comments (0)
Categories: Tornadoes, Watches and warnings
        

April 15, 2011

Coastal Flood, Flash Flood Watches go up for Sat.

With onshore winds predicted at the approach of Saturday's storm, and plenty of moisture expected to run up onto the eastern slope of the Appalachians, the National Weather service has begun hoisting flood watches for the region.

The southeast winds will push high tides two to three feet above tide table predictions along the western shore of the Chesapeake, and the tidal Potomac River. Those tables already accounted for the approach of the full moon on Sunday.

The moisture picked up by the storm from the Gulf of Mexico and the Atlantic will be squeezed out of the air as it is forced up the eastern slopes, with more than an inch of rain expected. That will raise the risk of flash flooding, as the rain falls on ground already wet, if not saturated, by recent rains.

So, the NWS has posted a Coastal Flood Watch for the Western Shore counties (blue on the map) on Saturday and Saturday evening, including all of Southern Maryland, plus Anne Arundel, Baltimore and Harford counties. 

Here are the times of Saturday's high tides:Flood Watches

HAVRE DE GRACE...9:11 PM...
BOWLEY BAR...6:49 PM...
FORT MCHENRY BALTIMORE...5:58 PM...
ANNAPOLIS U.S. NAVAL ACADEMY...4:28 PM AND 4:58 AM...
CHESAPEAKE BEACH...3:11 PM AND 3:41 AM...
SOLOMONS ISLAND...1:50 AM...
POINT LOOKOUT...1:00 AM...

NOW ALONG THE POTOMAC RIVER...
WASHINGTON CHANNEL...7:27 PM...
ALEXANDRIA...7:45 PM...
INDIAN HEAD...7:13 PM...
COLTONS POINT...2:29 AM...

The Flash Flood Watches are posted for Allegany County and counties (green on the map) in western Virginia and the eastern portions of West Virginia. 

"A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT COULD
LEAD TO FLASH FLOODING. MONITOR THE LATEST FORECASTS AND BE
PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED."

Posted by Frank Roylance at 11:15 AM | | Comments (0)
Categories: Watches and warnings
        

April 5, 2011

Crazy weather: Frost advisory on E. Shore

With temperatures forecast to dip to between 31 and 36 degrees early Wednesday, the National Weather Service forecast office in Mt. Holly, N.J. has issued a Frost Advisory for agricultural interests on the NOAA/NWSEastern Shore.

The advisory covers Talbot, Caroline, Kent and Queen Anne's counties, and the southern two-thirds of Delaware (blue on the map). The highest risk will come between 3 and 6 a.m. At risk are early blossoms and "tender vegetation," forecasters said.

Of course, far Western Maryland is still dealing with snow today, but they're not really into their growing season out there as the Eastern Shore is, so no advisories have been posted west of the bay. (Check out this highway cam for Keyser's Ridge.)

All the same, the overnight low tonight for Baltimore and its suburbs is expected to sink to the low 30s. So if you do happen to have anything "tender" outside, you'll probably want to cover it or bring it indoors.

A drop from 86 degrees at BWI on Monday afternoon to a low of 43 degrees early this afternoon is a fall of 43 degrees. By Wednesday morning we may have dropped a total of 53 degrees or more in 36 hours. Pretty impressive.

Posted by Frank Roylance at 4:29 PM | | Comments (1)
Categories: Watches and warnings
        

April 4, 2011

BGE on alert for storm damage tonight

There are no official severe storm watches or warnings posted yet for Central Maryland. But BGE has assessed the forecast and put its crews on alert for the power outages that thunderstorms and cold front Baltimoregusty winds could bring to the region tonight. In a news release this afternoon, the utility said:

"An approaching cold front could bring one to two inches of rain tomorrow morning, along with wind gusts of close to 50 miles per hour. These weather conditions could cause trees and tree limbs to come down onto power lines and other electric delivery equipment, interrupting service to customers.

"BGE has canceled non-emergency maintenance work and is in the process of identifying available resources, including BGE linemen and contract tree crews to ensure service can be restore to customers as safely and as quickly as possible."

The National Weather Service has posted a Hazardous Weather Outlook for most of the state west of the bay. It says:

"THUNDERSTORMS WILL BE POSSIBLE AFTER MIDNIGHT. THESE WILL BE
CAPABLE OF PRODUCING DAMAGING WIND GUSTS AND HEAVY RAIN THAT COULD
LEAD TO FLASH FLOODING
."

Temperature at The Sun at 2:50 p.m.:  81 degrees

Temperature at BWI at 3 p.m.:  82 degrees. Record high for the date is 83. I'm guessing this heat will pop those tree buds, get the grass growing and send pollen counts climbing. Welcome to the allergy season.

Posted by Frank Roylance at 2:45 PM | | Comments (0)
Categories: Watches and warnings
        

March 23, 2011

Severe T-storm Watch from Carroll, Howard west

The National Weather Service's Storm Prediction Center in Norman, Okla., has posted a Severe Thunderstorm Watch until 11 p.m. Wednesday from Carroll and Howard counties west to Allegany County:

"SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON
AND EVENING AS LOW PRESSURE AND A COLD FRONT MOVES EAST ACROSS
THE MID ATLANTIC. SOME OF THE THUNDERSTORMS MAY BECOME
SEVERE...WITH THE PRIMARY THREATS BEING DAMAGING WIND GUSTS AND
LARGE HAIL."

There's a Tornado Watch in part of Garrett County.

NOAA/NWS

Posted by Frank Roylance at 4:35 PM | | Comments (0)
Categories: Watches and warnings
        

March 10, 2011

Coastal Flood Advisory now a Warning

Low pressure and persistent winds from the east and southeast are pushing/drawing water up the bay, pumping today's high tides Thursday two to three feet above normal.

UPDATE, 12:45 p.m.: The National Weather Service has issued Flood Warnings for urban areas and small streams in Baltimore City and County, Anne Arundel Howard and Harford counties until 4:30 p.m.:  

"AT 1234 PM EST RADAR ESTIMATES AND SURFACE REPORTS INDICATE OVER
  AN INCH OF RAIN HAS FALLEN IN THE LAST SIX HOURS IN THE BALTIMORE
  METRO REGION.

" NUMEROUS AREA CREEKS AND STREAMS HAVE RISEN OWING TO THE RAINFALL
  AND WILL CONTINUE TO RISE AS MORE RAIN CONTINUES THIS AFTERNOON.

" A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY."

EARLIER: The weather service has also replaced Coast Flood Advisories with Coastal Flood Warnings on the Western Shore. Here's how the tide gauge at Baltimore is looking just after 11 a.m.

NOAA/ Tides Online

 

 

 

 

 

 

 

 

 

 

 

The Coastal Flood Warning is in effect until 3 a.m. Friday. Here some high tide times for the Maryland portion of the Chesapeake, from the NWS:

HERE ARE THE TIMES OF THE NEXT HIGH TIDES
FOR A FEW LOCATIONS FROM NORTH TO SOUTH...
ON THE CHESAPEAKE BAY...
HAVRE DE GRACE...1:13 PM AND 1:32 AM...
BOWLEY BAR...10:51 AM AND 11:10 PM...
FORT MCHENRY BALTIMORE...10:00 AM AND 10:19 PM...
ANNAPOLIS U.S. NAVAL ACADEMY...8:49 PM...
CHESAPEAKE BEACH...7:32 PM...
SOLOMONS ISLAND...5:41 PM...
POINT LOOKOUT...4:51 PM...

"A COASTAL FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR
IMMINENT. COASTAL RESIDENTS IN THE WARNED AREA SHOULD BE ALERT
FOR RISING WATER...AND TAKE APPROPRIATE ACTION TO PROTECT LIFE
AND PROPERTY."

Rainfall amounts have now topped one inch in many locations around the region. We have 1.35 inches here at The Sun's weather station, at Calvert and Centre streets. The CoCoRahs Network is reporting 1.22 inches at Severna Park at 10:35 a.m., and 1 inch at Odenton at 10 a.m.

The weather service is predicting another half to three-quarters of an inch this afternoon at BWI-Marshall Airport. One to two inches more is possible overnight before sunshine returns on Friday.

Continue reading "Coastal Flood Advisory now a Warning" »

Posted by Frank Roylance at 11:08 AM | | Comments (0)
Categories: Watches and warnings
        

January 25, 2011

Storm Watch now posted for all but southern Shore

The National Weather Service has extended the Winter Storm Watch to all of Maryland except for the Lower Eastern Shore, with the possibility for 5 inches of snow or more. Garrett County, in far Western Maryland, could see 6 or more.

The National Weather Service has nudged its predictions upward again, and Eric the Red is looking for 4 to 10 inches ... and a chance for thundersnow! And now BGE is warning customers to prepare for power outages as heavy, wet snow threatens to bring down limbs and power lines.

UPDATE, 6 p.m.: The weather service has issued a Winter Storm Warning for Allegany and Washington counties, with 4 to 8 inches of snow expected by Wednesday evening. The snow there is expected to start just after sunrise Wednesday.  The Warning replaces the Watch issued earlier.

The predictions on the new snow forecast map out of Sterling have also been bumped upward again by the computers, forecasting 7 inches north and west of Baltimore and Washington. (You can now click on the map for a pop-up version. You CAN teach an old dog new tricks!)

Earlier today, the Watch included only the western counties, plus Frederick, Montgomery, Carroll, northern Baltimore and Harford counties. Now Baltimore City and points south are included. Washington, D.C. and Northern Virginia are under a similar watch.

The Watch is in effect from Wednesday afternoon until late Wednesday night. The storm is still expected to bring a mix of wintry precipitation, with intervals of snow, rain, sleet and freezing rain during the day. But it's expected to end with a snowy flourish around Baltimore beginning in the late afternoon and evening.

Here's how Eric the Red is putting it this afternoon: "...the potential for a period of very heavy snow just in time for the eve commute. This looks like a wet snow... which may keep accumulations down... but I think it's time to go 4 to 10" in the metro area and points west and north... I should note that it would be very, very wise to think about getting home early tomorrow.

"I can not stress how intense the snowfall rates may be during the pm commute. If the models are right, and you go with a conservative solution ... then you're staring at 1 to 3" per hour for 4 to 8 hours. The precip will start to flare up ~ 1 pm or so."

Posted by Frank Roylance at 1:13 PM | | Comments (16)
Categories: Watches and warnings
        

Winter Storm Watch posted north of Baltimore

NOAA/NWSThe National Weather Service has posted a Winter Storm Watch through late Wednesday night for communities north of Baltimore - including Frederick, Carroll, northern Baltimore and Harford counties.

Montgomery County and those west to Allegany County are also in a Winter Storm Watch now.

And the NWS snow forecast map (left) has been beefed up some, too, now. (Is this starting to feel like the accumulation estimate escalation we saw so much last winter?) For a better look at the map, click here.

The Watch calls for 5 inches of snow or more, amid a mix of snow, sleet, freezing rain and rain. The precipitation would begin in the late afternoon Wednesday in Baltimore's suburbs, changing to snow as temperatures drop into the upper 20s Wednesday night.

 A Winter Storm Watch means there is a potential for significant snow, sleet or ice accumulations that may impact travel. Forecasters urge those in the Watch area to monitor the latest forecasts.

Posted by Frank Roylance at 10:41 AM | | Comments (21)
Categories: Watches and warnings
        

October 29, 2010

Freeze Watch tonight west of I-95

After a week that saw two record-warm overnight lows, autumn will come rushing back to Baltimore tonight as clear skies and diminishing winds allow radiational cooling to drop temperatures into the 30s.

NOAA/NWSForecasters at the National Weather Service's forecast office in Sterling, Va. have posted Freeze Watches (dark blue areas on the map) for Maryland west of the I-95 corridor (and east of counties that have already seen a freeze this fall):

"A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION
."

UPDATE, 4 p.m.: The NWS has bumped the Freeze Watch to a Freeze Warning tonight (light blue) for Washington, Frederick and Carroll counties in Maryland, with overnight lows expected to reach 30 to 32 degrees. Earlier post resumes below:)

The forecast low for BWI-Marshall Airport overnight is 35 degrees. Westminster could see 34 degrees and Hagerstown's forecast shows a low of 32. It could get colder in the usual rural locations and low spots, producing the first freezing temperatures since last spring. Freeze Warnings and Frost Advisories may be issued for some locations later today.

The cooler weather is coming to us with high pressure that is drawing cold air out of the northwest on brisk winds. As the high moves to our south, winds will shift to the west and calm, allowing whatever solar heating we manage today to radiate back into space tonight. 

The weekend should continue sunny and seasonably cool with highs in the low 60s and overnight lows near 40 degrees.

Posted by Frank Roylance at 10:41 AM | | Comments (3)
Categories: Watches and warnings
        

October 22, 2010

Frost advisories tonight for northern, western suburbs

The National Weather Service has posted Frost Advisories for Maryland communities north and west of the urban corridor, and west to Cumberland. The advisories, effective between 3 a.m. and 9 a.m. Saturday, include Howard, Montgomery, northern Baltimore counties.

The advisories mean that frost is possible tonight, and sensitive plants may be killed if left uncovered.

Colder temperartures are expected in mountainous counties in northern and western Virginia, where Freeze Warnings have been issued. 

The overnight forecast for Baltimore calls for lows near 38 at BWI-Marshall, and 35 degrees in Westminster.

UPDATE, 8 a.m. Saturday: We caved. The heat is on. It was 64 in the house when we finally got in Friday night. So we flipped the switch. Now it's 33 degrees out on the WeatherDeck, and there is frost on the pumpkin - literally. But it's toasty inside. Thanks, BGE. We owe you.

Posted by Frank Roylance at 3:17 PM | | Comments (0)
Categories: Watches and warnings
        

October 19, 2010

Frost Advisory posted for Western Maryland

Frost MarylandHere we go. Cold weather is upon us. With skies clearing, radiational cooling will sink temperatures in the northern and western counties tonight, while dew points fall into the mid-30s.  

So the National Weather Service has posted Frost Advisories for Maryland from Garrett County east as far as Frederick County, effective between 3 a.m. and 8 a.m. EDT Wednesday morning. A low of 38 is forecast for Deep Creek Lake tonight. The frost advisory may expand eastward into portions of Carroll, Howard and Montgomery counties.

"A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED."

Do you know where your potted palms are? Your windshield scraper?

(SUN PHOTO: Kim Hairston, 2005)

Posted by Frank Roylance at 5:25 PM | | Comments (0)
Categories: Watches and warnings
        

September 27, 2010

Severe storm, possible tornado in Carroll

FROM THE WEATHER SERVICE:

 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 130 PM EDT FOR EAST
CENTRAL CARROLL COUNTY...

AT 1251 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS LOCATED NEAR HAMPSTEAD...OR 8 MILES NORTHEAST OF
WESTMINSTER...MOVING NORTH AT 30 MPH.

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING AND AVOID WINDOWS. IF OUTDOORS OR IN A MOBILE HOME OR
VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS

Posted by Frank Roylance at 12:59 PM | | Comments (0)
Categories: Watches and warnings
        

August 5, 2010

Tornado Warning for southern Arundel

The National Weather Service has issued a Tornado Warning for extreme southern Anne Arundel County and northern Calvert County. It will remain in effect until 5 p.m.

UPDATE 4:45 p.m.: The thunderstorm has left the warned area, so the tornado warning has been canceled.

Severe Thunderstorm Warning is in effect, too, for parts of Southern Maryland. A Severe Thunderstorm Watch is in effect for most of the rest of the state until 10 p.m. The storm has produced winds gusts to 59 mph at Reagan National Airport.

The NWS forecast office in Sterling, Va., said:

"MODERATE TO HIGH INSTABILITY WILL COMBINE WITH THE INCREASING
SHEAR PROFILES FOR THUNDERSTORMS TO BE CAPABLE OF PRODUCING
DAMAGING WINDS THIS AFTERNOON INTO THIS EVENING. HIGH MOISTURE
CONTENT ALSO SUGGESTS THAT THUNDERSTORMS WILL CONTAIN TORRENTIAL
DOWNPOURS...BUT THE QUICK MOVEMENT OF STORMS SUGGESTS THAT
WIDESPREAD FLASH FLOODING IS NOT EXPECTED.

"THE BEST CHANCE FOR SEVERE THUNDERSTORMS WILL BE DURING THE EARLY
AND MIDDLE AFTERNOON HOURS ACROSS THE NORTHERN AND WESTERN
CWA...AND LATE THIS AFTERNOON INTO THIS EVENING ACROSS THE
SOUTHEASTERN PORTIONS OF THE AREA."

Posted by Frank Roylance at 4:30 PM | | Comments (0)
Categories: Watches and warnings
        

June 10, 2010

Don't see this often: Waterspout alert

The National Weather Service's Wakefield, Va. forecast office has posted a Special Weather Statement noting the possibility that waterspouts may move on shore in the southern Chesapeake this Waterspoutevening. If you see one, get a photo and send it along. Love to post it.

Here's the advisory:

 "...ISOLATED WATERSPOUTS POSSIBLE THROUGH EARLY EVENING..

"AREAS ALONG THE WESTERN SHORE OF THE BAY...AND ALONG THE JAMES
RIVER...YORK RIVER...AND RAPPAHANNOCK RIVER WILL HAVE THE POSSIBILITY
OF SEEING WATERSPOUTS MOVE ONSHORE THROUGH THE EARLY EVENING HOURS.
THESE ARE EXPECTED TO BE VERY SHORT LIVED...AND MAY CAUSE BRIEF
GUSTY WINDS...BUT LITTLE OR NO DAMAGE."

(AP PHOTO: Dale Omori, Cleveland Plain Dealer/Lake Erie, 1994)

Posted by Frank Roylance at 6:04 PM | | Comments (0)
Categories: Watches and warnings
        

June 3, 2010

Severe T-storm Watch issued for Maryland

UPDATE: A Severe Thunderstorm Warning was posted at 5:01 for Howard County and southwestern Baltimore County and northwestern Anne Arundel County, as a storm cell drifts east from northern Virginia. It remains in effect until 5:45 p.m. Earlier warnings remain for parts of Prince Georges and Charles counties. That has now been extended into southern Arundel and the Chesapeake Bay and Baltimore harbor.

"AT 500 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 17 MILES WEST OF COLUMBIA...OR
  NEAR DAMASCUS...AND MOVING EAST AT 30 MPH."

EARLIER: The National Weather Service on Thursday afternoon issued a Severe Thunderstorm Watch for all of Maryland east of Garrett County, in effect until 9 p.m. The Watch means conditions are ripe for severe storm development, but that the storms are not yet imminent. Severe thunderstorms can produce damaging winds, dangerous lightning and large hail. 

Here's more from the NWS forecast office in Sterling:

NOAA/NWS"ISOLATED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS
THE EASTERN SUBURBS OF WASHINGTON DC AND THE CITY OF BALTIMORE
THIS AFTERNOON. ANY SHOWERS AND THUNDERSTORMS THAT DEVELOP WILL
BE CAPABLE OF PRODUCING HEAVY DOWNPOURS...OCCASIONAL LIGHTNING
STRIKES AND WIND GUSTS TO AROUND 30 MPH.

"ACTIVITY WILL BECOME MORE WIDESPREAD BETWEEN 4 AND 6 PM."

Posted by Frank Roylance at 3:03 PM | | Comments (0)
Categories: Watches and warnings
        

May 27, 2010

Flash Flood Watch up as PM storms approach

The National Weather Service has posted a Flash Flood Watch for Baltimore, Washington and their suburban counties, beginning at 5 p.m. Thursday as an approaching cold front threatens the Thunderstorm Baltimoreregion with heavy, slow-moving thunderstorms.

UPDATE: The NWS has issued a Severe Thunderstorm Watch until 9 p.m. for all of Maryland between Allegany County and the Bay, plus the northern portions of the Eastern Shore.  

Storms could begin in the Baltimore region earlier this afternoon as the bay breeze picks up and moves over hotter air to the west. The more severe weather is likely late this afternoon as the cold front approaches. Those storms will be capable of producing strong winds and large hail, forecasters warned.

Worse, from a flooding standpoint, will be the slow movement of the storms, allowing heavy rain accumulations in some locations, especially in the Baltimore-Washington area. Hence, the flash flood worry. Rain totals of a half- to three-quarters of an inch are possible.

Behind the front things will calm down, although showers may continue off and on through the night and Friday, forecasters said. But the hot weather we've had for the past two days will ease. Highs Friday should hold in the low 70s, rising to the low 80s by Sunday.

Posted by Frank Roylance at 9:47 AM | | Comments (0)
Categories: Watches and warnings
        

May 14, 2010

Severe T-storm watch issued for Md. west of bay

Thunderstorm Baltimore 5/14/10The National Weather Service has issued a Severe Thunderstorm Watch for all of Maryland west of the Chesapeake Bay. The watch is in effect through 9 p.m. Friday evening.

(UPDATE: The storms blew through around dinnertime, with some spectacular cloud formations, like the one at left. Anyone else get some good shots? Send 'em in. Earlier post resumes.)

There is nothing nearby on the radar yet, but there does seem to be a line of storms developing well to our north, in Pennsylvania, where Severe Thunderstorm Warnings are posted. There are also some severe storms to our southwest, in SW Virginia. The Severe T-Storm Warning there is pretty remarkable, calling for "hen egg-sized hail" and wind gusts to 70 mph. Yikes!.

Here's why we don't drive in hail storms. And here are some tips for staying safe.

In the meantime, the mercury has reached 89 degrees this afternoon here at The Sun. It's 87 down at BWI-Marshall. The record high for Baltimore on this date is 95 degrees, set in 1956.

(SUN PHOTO/Frank D. Roylance)

Posted by Frank Roylance at 3:03 PM | | Comments (0)
Categories: Watches and warnings
        

March 12, 2010

Wind and tides trigger Coastal Flood Advisories

The National Weather Service has hoisted Coastal Flood Advisories (light green on map) for Maryland's Western Shore as the coastal storm developing to our south drives water into the tidal creeks and beaches.

The advisories are in effect from Harford County south to St. Mary's, from midnight until 6 a.m. NWS/NOAAThey will then upgrade to a Costal Flood Watch, in effect through Saturday afternoon.

High tides could rise two feet above predictions overnight due in part to the persistent east winds, and in part because of increased tidal levels related to the approach of the new moon. Minor flooding is expected. Higher tides are expected on Saturday. Here's more from the NWS: 

"STRONG EASTERLY WINDS WILL PERSIST THROUGH SATURDAY CAUSING TIDAL
ANOMALIES TO CONTINUE INCREASING. THE INCREASING TIDAL ANOMALIES
COMBINED WITH THE LUNAR CYCLE WILL BRING THE POTENTIAL FOR
MODERATE FLOODING NEAR TIMES OF HIGH TIDE.

"HIGH WATER LEVELS IN THE POTOMAC DUE TO HEAVY RAIN WILL ENHANCE THE THREAT FOR COASTAL FLOODING ACROSS THE UPPER TIDAL POTOMAC RIVER SATURDAY AFTERNOON
AND POSSIBLY INTO EARLY NEXT WEEK.

"EMERGENCY MANAGERS AND PEOPLE WITH INTEREST ON THE POTOMAC RIVER
AND THE WESTERN SHORE OF THE CHESAPEAKE BAY SHOULD BEGIN TO
PREPARE FOR POTENTIAL COASTAL FLOODING."

Next high tides:

HAVRE DE GRACE: 8:17 p.m. and 8:00 a.m.
FORT MCHENRY BALTIMORE: 4:47 a.m. and 5:39 p.m.

ANNAPOLIS U.S. NAVAL ACADEMY: 3:17 a.m. and 4:08 p.m.
SOLOMONS ISLAND: 12:09 a.m. and 1:00 p.m.
POINT LOOKOUT: 11:19 p.m. and 12:10 p.m.

NOAA Tides Online

Continue reading "Wind and tides trigger Coastal Flood Advisories" »

Posted by Frank Roylance at 8:37 PM | | Comments (0)
Categories: Watches and warnings
        

February 8, 2010

Storm Warnings posted: Another 10 to 20 inches due

The National Weather Service has posted Winter Storm Warnings for all of Maryland west of the Chesapeake Bay, calling for 10 to 20 inches of new snow by Wednesday evening.

Read it and weep:

"THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED AWindsock in Blizzard
WINTER STORM WARNING FOR...WHICH IS IN EFFECT FROM NOON TUESDAY
TO 7 PM EST WEDNESDAY. THE WINTER STORM WATCH IS NO LONGER IN
EFFECT.

* PRECIPITATION TYPE...SNOW.

* ACCUMULATIONS...10 TO 20 INCHES.

* TIMING...MID-AFTERNOON TUESDAY THROUGH WEDNESDAY.

* TEMPERATURES...TEMPERATURES NEAR FREEZING AT THE ONSET TUESDAY
  AFTERNOON. TEMPERATURES WILL DROP INTO THE UPPER 20S TUESDAY
  NIGHT AND WEDNESDAY.

* WINDS...LIGHT SOUTHEASTERLY WINDS TUESDAY BECOMING
  NORTHWESTERLY 15 TO 25 MPH WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

"A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. THE COMBINATION OF SNOW AND STRONG WINDS
WILL MAKE TRAVEL VERY HAZARDOUS."

(PHOTO by Jim Dawson, Trappe, Md./ Used with permission)

Posted by Frank Roylance at 3:40 PM | | Comments (41)
Categories: Watches and warnings
        

February 7, 2010

Winter Storm Watch posted for region. Again

The National Weather Service has posted a Winter Storm Watch for the region, predicting at least 5 more inches of snow due with a new storm due here on Tuesday. The Watch is in effect from Tuesday afternoon through Wednesday afternoon.

Read it and weep:NOAA

* PRECIPITATION TYPE...SNOW.

* ACCUMULATIONS...POTENTIAL FOR 5 OR MORE INCHES OF SNOW.

* TIMING...MID TO LATE TUESDAY AFTERNOON THROUGH WEDNESDAY
  AFTERNOON.

* TEMPERATURES...TEMPERATURES AT OR JUST ABOVE FREEZING AT THE
  ONSET TUESDAY AFTERNOON. TEMPERATURES WILL DROP INTO THE MID TO
  UPPER 20S TUESDAY NIGHT AND WEDNESDAY.

* WINDS...LIGHT SOUTHEASTERLY WINDS TUESDAY BECOMING NORTH-
  NORTHWESTERLY 15 TO 25 MPH WEDNESDAY.

I just got off the phone with Bryan Jackson, NWS meteorologist at Sterling. He says this storm will bring more warm air and mixed precipitation into Southern Maryland Tuesday, but the Baltimore area is expected to receive all snow.

Thankfully, this is not another soggy coastal storm coming north from the Carolinas packing loads of moisture and getting more intense as it approaches.

Instead, this one is coming across the country as two low-pressure systems. It's not going to be as wet as the last one, Jackson said, and it will become a coastal low only after it reaches the Delmarva coast. Its biggest impact is expected to be to our north as it intensifies and moves north from here.

"We're not looking, certainly, at anything as significant as what we just had," he said. "But we are looking at the potential for a Winter-Storm-Watch-criteria snowfall," which is 5 inches or more.

Posted by Frank Roylance at 3:58 PM | | Comments (3)
Categories: Watches and warnings
        

February 6, 2010

Blizzard Warnings expanded to Upper Shore

The National Weather Service forecast office in Mt. Holly, NJ has expanded Blizzard Warnings to the Upper Shore of Maryland, including Kent, Queen Anne's, Caroline and Talbot counties.

The warning is in effect until 7 p.m. Saturday. The additions fill in a gap in a swath of Blizzard Warnings that extends from southern Maryland to Washington, D.C., Baltimore, Harford County, parts of the Eastern Shore, Delaware and coastal New Jersey.

In addition to the falling anow, as the coastal low intensifies today, winds will increase across the wearning area. Blizzard conditions include falling or blowing snow, with winds in excess of 35 mph decreasing visibilities to less than a quarter mile for a period in excess of three hours. NOAA

Here's a portion of the warning:

"HEAVY SNOW WAS OCCURRING ACROSS THE AREA EARLY THIS MORNING AND
WILL CONTINUE THROUGH MUCH OF TODAY. THE SNOW WILL FALL HEAVILY
AT TIMES...WITH RATES UP TO 1 TO 3 INCHES AN HOUR. THE HEAVIEST
SNOW WILL OCCUR THROUGH ABOUT MIDDAY TODAY. THE SNOW MAY MIX WITH
SLEET AT TIMES EARLY THIS MORNING MAINLY ACROSS SOUTHERN TALBOT
AND CAROLINE COUNTIES...AND MAY BE INTERMITTENT THERE AS WELL.

"STORM TOTAL SNOW ACCUMULATIONS OF 20 TO 27 INCHES ARE EXPECTED. AN
INCREASING NORTHEAST TO NORTH WIND WITH GUSTS OF 35 TO 40 MPH
INTO EARLY THIS AFTERNOON WILL CREATE EXTENSIVE BLOWING AND
DRIFTING SNOW...ALONG WITH WHITEOUT CONDITIONS. THE WIND COMBINED
WITH THE FALLING SNOW WILL CREATE EXTREMELY HAZARDOUS CONDITIONS
INCLUDING GREATLY REDUCED VISIBILITIES TO LESS THAN ONE QUARTER
MILE AT TIMES."

Forecasters out at Sterling, meanwhile, now say Baltimore and D.C. are not likely to break the all-time snowfall records for either city.

On the other hand, they say, both cities have already set new snowfall records for Friday's date, breaking marks set more than a century ago. "So this can still be called a record-breaking storm," they said.

For Baltimore, that busted record for Feb. 5 was 6.4 inches, set in 1899. The new record is 7.5 inches. Looks like we have also broken the Feb. 6 record of 8.4 inches set in 1978.

In Washington, the old record for Feb. 5 was 7.5 inches, set on this date 1892. The new record, set yesterday, is 8.7 inches. The record for Feb. 6 was 4.4 inches, set in 1983. That one's toast, too.

Posted by Frank Roylance at 10:39 AM | | Comments (2)
Categories: Watches and warnings
        

February 5, 2010

Blizzard Warnings extended to Baltimore, DC

UPDATE, 8:30 p.m.: Here are some snow totals as they come in tonight. Parts of Arundel now have more than 6 inches on the ground. Allegany County is reporting 8 to 11 inches after 6 p.m.

The National Weather Service has posted Blizzard Warnings this afternoon for Anne Arundel, Calvert and St. Mary's counties (red on the map), including the city of Annapolis.

UPDATE, 10 p.m.: The weather service tonight added southern Baltimore, Harford, Charles, Prince George's counties, plus Baltimore City and the District of Columbia to the blizzard warnings.

NOAAThe warnings mean residents should expect falling and blowing snow, with winds in excess of 35 mph and visibilities reduced to less than a quarter mile for a period of three hours or more. The warnings are in effect from 10 p.m. Friday night to 10 p.m. Saturday. The forecast calls for snow totals of 20 to 30 inches before the storm ends Saturday night.

Here's a portion of the warning:

"THIS EXTREMELY DANGEROUS STORM IS EXPECTED TO PRODUCE RECORD
SNOWFALL FOR THE BALTIMORE AND WASHINGTON DC METROPOLITAN AREAS.
TRAVEL CONDITIONS TONIGHT ACROSS THE REGION WILL BE EXTREMELY
HAZARDOUS AND LIFE-THREATENING. HELP YOUR LOCAL AND STATE
GOVERNMENT FIRST RESPONDERS AND TRANSPORTATION AGENCIES BY
STAYING OFF THE ROADS."

"A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS"

UPDATE: 5 p.m.: Meanwhile, the mercury has hit 32 degrees downtown, at The Sun's weather station at Calvert and Centre streets. That's just about the dew point (31 degrees) so the air is saturated and cold enough for the flakes to begin sticking. And the barometer is headed for the basement. All the ducks are lined up.

Posted by Frank Roylance at 3:38 PM | | Comments (35)
Categories: Watches and warnings
        

December 9, 2009

High winds could bring down trees late today

There is a wind advisory posted for the region late today as deep low pressure  to our north (the barometer in Baltimore is currently a low 29.24 inches) drags a cold front through the area. Here's the scoop:

"A WIND ADVISORY REMAINS IN EFFECT UNTIL 1 AM EST THURSDAY.

"A DEEP LOW PRESSURE SYSTEM TO THE NORTH WILL BRING A COLD FRONT
TO CROSS THE AREA LATE THIS AFTERNOON AND EVENING. STRONG AND
GUSTY WINDS FROM THE WEST AND SOUTHWEST WILL DEVELOP BEHIND THIS
FRONT. GUSTS UP TO 50 MPH WILL OCCUR. THE GROUND WAS SATURATED BY
HEAVY RAINS OVERNIGHT...AND DOWNED TREES WILL BE LIKELY"

Posted by Frank Roylance at 3:35 PM | | Comments (0)
Categories: Watches and warnings
        

October 19, 2009

Frost advisories up for Central Maryland tonight

Frost advisories in blueIf last night's frost didn't kill them, you'd best cover or bring those tender plants indoors tonight.

The National Weather Service has just posted frost advisories (blue area on the map) for all of Central Maryland between 2 a.m. and 9 a.m. Tuesday morning.

With clear skies ahead, temperatures are expected to drop deep into the 30s tonight, cold enough for frost that will kill vulnerable and exposed plants. 

The record low for an Oct. 20 at BWI is 28 degrees, reached most recently in 1992. 

We're still about nine days ahead of the average first-frost date for Baltimore. The forecast low tonight for the city is 40 degrees, but we don't need to reach an air temperature of 32 degrees to form frost on some exposed surfaces.   

Posted by Frank Roylance at 3:08 PM | | Comments (0)
Categories: Watches and warnings
        

March 23, 2009

Increased fire threat today

With strong sunshine, a scarcity of rain recently and very dry air today, the National Weather Service has posted a Special Weather Statement noting increased risks of brush fires today.

The winds are not too active, so they have not yet issued a Red Flag Warning, as they have to our north and east. But it would be wise to be careful with fires today, and to crush those butts in the ashtray.

The humidity here on the WeatherDeck this afternoon has dropped from 63 percent  at 7 a.m. to 22 percent just after noon. That's desert-dry. And there is lots of tinder around after weeks without significant rainfall.

Here's the statement on this afternoon's fire hazard:

A DRY COLD FRONT MOVED THROUGH THE AREA THIS MORNING...AND MUCH
DRIER AIR IS CURRENTLY MOVING INTO MARYLAND AND VIRGINIA. WINDS HAVE
TURNED TO THE NORTH AND ARE INCREASING...WITH GUSTS TO 20 TO 25
MPH POSSIBLE THROUGHOUT MUCH OF THE DAY. RELATIVE HUMIDITIES WILL
DROP TO AROUND 20 TO 25 PERCENT LATER THIS MORNING AND THIS WILL
FURTHER LOWER THE MOISTURE CONTENT OF FINE FUELS SUCH AS
GRASSES...PINE NEEDLES AND TWIGS.

THE COMBINATION OF LOWER FUEL MOISTURES...LOW RELATIVE
HUMIDITY...AND WINDY CONDITIONS...WILL POSE AN INCREASED FIRE
THREAT TODAY THROUGH THE LATE AFTERNOON HOURS.

RESIDENTS ARE URGED TO EXERCISE CAUTION HANDLING ANY POTENTIAL
IGNITION SOURCE...INCLUDING MACHINERY... CIGARETTES...AND MATCHES.
BE SURE TO PROPERLY DISCARD ALL SMOKING MATERIALS. ANY DRY GRASSES
AND TREE LITTER THAT IGNITE WILL HAVE THE POTENTIAL TO SPREAD
QUICKLY.

Posted by Frank Roylance at 12:08 PM | | Comments (0)
Categories: Watches and warnings
        

October 21, 2008

Wildfire hazard this afternoon

Scant rainfall, very low humidity and brisk winds will combine today to boost the danger that a a spark, a tossed cigarette or some other activity will touch off brush fires in Central Maryland.

The National Weather Service has declared an "Enhanced Fire Danger" for the Mid-Atlantic region this afternoon. In Maryland that covers every jurisdiction except Worcester and Garrett counties. Here's the scoop:

"A DRY COLD FRONT WILL MOVE ACROSS THE REGION LATE THIS MORNING
INTO THE EARLY AFTERNOON. BEHIND THE FRONT...SUSTAINED NORTHWEST
WINDS IN THE 20 TO 25 MPH RANGE WITH GUSTS OF 30 TO 35 MPH...ARE
EXPECTED DURING THE AFTERNOON AND EVENING HOURS. RELATIVE
HUMIDITIES WILL BOTTOM OUT IN THE 30 TO 35 PERCENT RANGE...AND
ENHANCED DOWNSLOPING EAST OF THE BLUE RIDGE COULD DROP RELATIVE
HUMIDITIES FURTHER INTO THE UPPER 20S...ESPECIALLY ACROSS THE
NORTH CENTRAL PIEDMONT OF VIRGINIA.

"THESE CONDITIONS WILL CAUSE AN INCREASED FIRE DANGER ACROSS THE
AREA. USE EXTREME CAUTION WITH ANY OUTDOOR BURNING ACTIVITIES."

While September was very wet here, Baltimore has recorded only 0.12 inch of rain since Oct. 1.

The forecast calls for a "dry cold front" to pass through the region around noon today, bringing gusty northwest winds for the afternoon and evening. Winds will be in the 20-25 mph range, with gusts to 35 mph. With any luck, it will blow your leaves into your neighbor's yard.

LA Times photoMore cold air will pour in behind the front, dropping temperatures into the 30s for the next three nights. But skies will remain pretty sunny, and starry at night, until the weekend. Then, we're looking for increased rain chances and gray skies.

The bad weather is coming from a low forming out over the Plains, which will gather up Gulf moisture as it heads east and forms a secondary storm center off the Southeast Coast. It's the sort of storm we look for to produce some of our best winter storms. But we're not there yet, fortunately.

Now, in a seasonal note, trees in The Sun's little grove of ginkgoes - or at least the female members - planted many years ago along Calvert and Centre streets in Baltimore, are once again dropping their stinking fruit. They smell like vomit, but nonetheless attract a handful of folks each year who - garbed in masks and gloves - quietly collect and open the nasty, pulpy things and harvest the seeds.

These are ginkgo nuts. They're widely used in Asian cooking, I'm told. Former Sun reporter Rob Hiaasen wrote a story in 1995 about this annual visitation to The Sun's grove. It follows below. If you have no stomach for ginkgo nut gathering, I can't blame you. But drive by our building sometime in the next few weeks as the ginkgoes at Calvert and Centre turn their golden shade of yellow. It's a beautiful show and worth the detour.

Continue reading "Wildfire hazard this afternoon" »

Posted by Frank Roylance at 10:45 AM | | Comments (0)
Categories: Watches and warnings
        

March 6, 2008

Record runoff discharging at Conowingo Dam

Flood warnings remain in effect in Harford and Cecil counties today as record rain and snowmelt in Pennsylvania and New York send high water down the Susquehanna River. The river has already passed flood stage at Marietta, Pa., about 35 miles upstream from Conowingo. It appears to have crested at Harrisburg.

UPDATED: The water below the Exelon Power Corp.'s Conowingo Hydroelectric Station is forecast to reach 25.5 feet by this evening, then begin to fall. At 10:30 a.m. it was at 24.5 feet. That is a foot above flood stage (23.5 feet). Minor flooding is occurring, according to the National Weather Service; "moderate" flooding is expected.

The forecast, if realized, would bring the river to Notification Level 5, with 21 to 25 of the dam's 53 gates open. At Level 5, backyards and basements on Main Street, and Tome's landing in Port Deposit begin to flood.

An earlier NWS forecast had predicted the river level would reach Level 6. An earlier version of this post indicated that level had already been reached. It has not. Your weather blogger regrets the error. Here's more on the Notification levels..

The webcam photo was taken in June 2006, during runoff from heavy rains. If anyone snaps some pictures there today, send them along and we'll post them.

Webcam photo of Conowingo in June 2006Water was rushing through the dam this morning at a rate of 323,000 cubic feet per second. The previous record for a March 6 was 320,000 cf/s in 1979. The average for this date is 70,500 cubic feet per second. The all-time record high flow was 1.13 million cubic feet per second, on June 24, 1972, in the aftermath of Tropical Storm Agnes.

Below is a graph of the discharge rate at 9:30 this morning. You can get real-time data on the discharge by clicking here.

 

 

 

 

 

USGS 

Posted by Frank Roylance at 10:24 AM | | Comments (4)
Categories: Watches and warnings
        

February 10, 2008

Fire danger from Baltimore south

Watch those smokes, folks. The National Weather Service has posted a "Red Flag Warning" from Arundel and Montgomery counties wouth into Virginia, as high winds and very low humidities turn grass, brush and leaf litter to tinder. It's the red zone in this map.

The forecast calls for winds gusting as high as 55 mph this afternoon. The really cold arctic air moves in late today, sending overnight lows into the teens tonight. This will be very dry air. Here's how the forecasters out at Sterling put it in their discussion yesterday:

"FOR SNOW LOVERS THIS WILL BE A WASTE OF COLD AIR. HIGH PRESSURE TO BUILD
INTO THE REGION SUNDAY NIGHT BRINGING VERY DRY (AND COLD) AIR. I CAN`T
RECALL THE LAST TIME I PUT SUBZERO DEWPOINTS IN THE ZONES. LOTS OF STATIC
ELECTRICITY WHEN YOU WALK AROUND AND TOUCH ANYTHING MON. MORNING."

Sub-zero dewpoints mean the air is so dry that temperatures would have to sink below zero before the air would become saturated, and the moisture condense and fall as snow. The dewpoints in Baltimore tonight will be minus-2 to minus-4 degrees.

I'll have to be careful with static charges. I've zapped my laptop once before with a spark from my finger to the screen. It went dark and I had to reboot.

 

 

 

 

 

Posted by Frank Roylance at 9:18 AM | | Comments (0)
Categories: Watches and warnings
        

January 29, 2008

Coastal flooding tonight, wind tomorrow

The National Weather Service has posted a coastal flood advisory for tonight as southerly winds drive water up the bay and send it lapping onto low-lying spots on the Western Shore of the bay and the tidal Potomac River. Check the advisory for high tide times at your location. Here's how the tide tracker saw it around 5 p.m. Tuesday. You can follow it yourself if you click here.

Tides Online 

They're only talking about "minor" flooding, but it pays to keep a watch out, especially in flood-prone spots such as the Alexandria, Washington and the Annapolis City Dock. 

The flood threat will disappear during the morning tomorrow, as an approaching cold front crosses the region and turns the winds around to the west. But these will be strong winds. A wind advisory has been posted for the Baltimore metro area, from 5 a.m. Wednesday to 4 p.m. It warns of sustained winds reaching 15 to 25 mph, with gusts to 50 mph. Take that into account if you have to put trash out tomorrow.

Next up? Freezing rain late Thursday into Friday, with the best chance for icing west of I-95. Nice.

Posted by Frank Roylance at 4:54 PM | | Comments (0)
Categories: Watches and warnings
        

June 12, 2007

Severe T-storm watch posted

UPDATE, 5:10 p.m.: The severe thunderstorm warning for Baltimore and Harford counties has been lifted. Watches remain in effect. Here's the latest watch/warning map

EARLIER: Thunderstorms pushing south and west out of New Jersey and Pennsylvania could reach Maryland this afternoon or evening. The National Weather Service has posted a severe thunderstorm watch for all of Central Maryland, the District and Northern Virginia, as well as the northern Eastern Shore and west to Allegany County. Large hail remains the primary worry.

Here's the radar loop. And the satellite view. Here's (as of 2:50 p.m.) where the watch was posted. Here is the forecast.  Here's a regional map of watches and warnings.

And here's a portion of the watch statement:

"THIS AFTERNOON AND TONIGHT

"SEVERE THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EARLY THIS
EVENING ACROSS THE AREA. AN UPPER LEVEL DISTURBANCE OVER THE
NORTHEAST WILL MOVE TO THE SOUTHWEST THIS AFTERNOON. THUNDERSTORMS
ARE EXPECTED TO DEVELOP EARLY THIS AFTERNOON OVER PENNSYLVANIA AND
NEW JERSEY AND MOVE TO THE SOUTHWEST INTO THE AREA.

"THE ATMOSPHERE ALOFT IS VERY COLD AND HAIL IS EXPECTED FROM THE
STRONGEST STORMS THIS AFTERNOON. THE MOST LIKELY TIME FOR SEVERE
WEATHER IS BETWEEN 2 AND 4 PM ACROSS CENTRAL AND NORTHERN
MARYLAND...AND BETWEEN 4 AND 6 PM FURTHER SOUTH ACROSS NORTHERN
VIRGINIA THE DISTRICT OF COLUMBIA AND SOUTHERN MARYLAND.
THUNDERSTORMS ARE EXPECTED TO WEAKEN AS SUNSET APPROACHES.

"THE PRIMARY RISK FROM SEVERE THUNDERSTORMS THIS AFTERNOON WILL BE
LARGE HAIL UP TO HALF DOLLAR SIZE."
Posted by Frank Roylance at 2:45 PM | | Comments (0)
Categories: Watches and warnings
        

May 16, 2007

Batten your hatches

UPDATE, 3:50 p.m.: Severe storm warnings for Harford and Baltimore counties have been cancelled. Severe storm watches remain in effect across the region. Here's a map that will provide current watches and warnings.

EARLIER: Baltimore and Harford counties are under severe storm warnings this afternoon as thunderstorms roll in ahead of a cold front from the north and west. The rest of the region is under a severe storm watch. Here is the latest forecast. Here is the current storm warning. And here is the local radar. For a wider view, click here.

Where's the lightning? Check here.

Here's how Sterling puts it:

STRONG THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THE BLUE RIDGE
AND ACROSS THE BALTIMORE METRO AREA DURING THE MID
AFTERNOON...BRINGING A BRIEF HEAVY RAIN...DANGEROUS CLOUD TO GROUND
LIGHTNING...AND THE THREAT OF LOCALLY DAMAGING WIND GUSTS. THIS
ACTIVITY IS FORECAST TO MOVE SOUTHEAST ACROSS THE WASHINGTON DC
METRO AREA...INTERSTATE 95 CORRIDOR AND INTO LOWER SOUTHERN MARYLAND
DURING THE DINNER TIME HOURS.

And here are some severe weather safety rules to keep in mind. Be careful out there.

 

Posted by Frank Roylance at 2:31 PM | | Comments (0)
Categories: Watches and warnings
        

March 29, 2007

Brush fire hazard on Shore

Dry air and stiff winds have spurred the National Weather Service forecast office in Mt. Holly, N.J. to issue "red flag warnings" for northeastern Maryland and Delaware. That means conditions are ripe for the spread of brush fires. The warnings extend well beyond the Eastern Shore, north into New Jersey and eastern Pennsylvania.  So if you're in that area - or anywhere else for that matter - be careful with outdoor fires, and snuff your cigarettes in the ashtray. Here's our official forecast, from Sterling.

Ever wonder why much of Maryland's Eastern Shore gets its weather forecasts from a forecast office in New Jersey? Me too. It turns out that Maryland - one of the nation's smallest states - was carved up and parceled out to no fewer than four regional weather forecast offices, all located in other states. Here in Central Maryland, we're covered from the Sterling, Va. office. Garrett County, in far Western Maryland, gets its forecasts from the Pittsburgh office. Northeastern Maryland is handled from Mt. Holly, N.J.  And the Southern Shore, including Ocean City, is covered by forecasters in Wakefield, Va., west of Norfolk.

Go figure.

Posted by Frank Roylance at 8:39 AM | | Comments (0)
Categories: Watches and warnings
        

February 22, 2007

Tie down Toto

Better put a rope on Toto today. Also bring in the garbage cans, secure your trash and put some muscle at the wheel of the Winnebago. Big wind's coming this afternoon as a cold front reaches the area from the northwest.

The National Weather Service has issued a wind advisory, warning of winds gusting in excess of 45 mph after the front reaches the I-95 corridor. Here's the advisory.

While our MarylandWeather.com forecast made mention of a possibility of thunderstorms arriving with the frontal passage, the National Weather Service discussion this morning downplays the possibility. We'll all find out in a few hours.

Behind the front we get into colder, drier air - colder than yesterday's highs in the 50s, and colder than the long-term averages for BWI at this time of year. But we won't be seeing the sort of arctic cold we saw last week, with lows in the teens and highs struggling to reach 30 degrees. Here's the official forecast.

Posted by Frank Roylance at 7:45 AM | | Comments (0)
Categories: Watches and warnings
        

November 30, 2006

Buckle up, batten down

There are high wind watches up across our region. We're being told to expect sustained winds over 40 mph across most of the state tomorrow afternoon, with gusts above 58 mph, as this stormy cold front crosses the region. They're calling for high water along the bay shore, too - 1 to 2 feet above normal tides. They're already rising this afternoon, as this chart shows. (Click to enlarge.)

Thursdaytides

Also expect brief, heavy rains in thunderstorms and rapidly falling temperatures.

It was nearly 72 degrees here this afternoon at The Sun's monitoring station at Calvert and Centre streets. BWI reported 71 degrees this afternoon, too. The record for a Nov. 30 in Baltimore is 74 degrees, set downtown in 1933. The overnight readings are forecast to fall to 37 degrees by tomorrow night, and to 27 degrees by Monday night.

Posted by Frank Roylance at 3:25 PM | | Comments (2)
Categories: Watches and warnings
        

May 22, 2006

Freeze warning for Allegany

The National Weather Service has posted a freeze warning for tonight in Cumberland and other portions of Allegany County. Temperatures out west could dip as low as 30 degrees tonight as cold air continues to stream in from the Great Lakes and Canada, and clear skies allow plenty of the day's solar energy to radiate back out into space.

Of course, that also makes it a great night for stargazing. The big show this month remains Jupiter, brilliant in the southeast in the evening and just a couple of weeks past opposition - its closest and brightest apparition of the year. Binoculars should reveal as many as four of its moons, lined up on either side of the big planet.

If you get lucky while you're outside tonight, maybe you'll spot a fireball like this one. It was photographed from El Paso, Texas, on May 4.

Posted by Frank Roylance at 4:29 PM | | Comments (0)
Categories: Watches and warnings
        

April 26, 2006

Frost along the Pa. border

There are frost advisories up tonight in the Pennsylvania counties just north of the Mason-Dixon Line, bordering Carroll, Baltimore and Harford counties. I suspect weather conditions don't much respect political boundaries, even those as venerable as Mason's and Dixon's. So watch for frost in the normally colder valleys of north-central Maryland, too.

The latest recorded freezing temperature at BWI was a 32-degree reading on May 11, 1966

Posted by Frank Roylance at 6:21 PM | | Comments (0) | TrackBacks (1)
Categories: Watches and warnings
        

March 14, 2006

Wildfire hazard Wednesday

Watch those smokes. Dry air and high winds have raised the risk of wildfires in Maryland the Virginia for tomorrow. "Red Flag" warnings have been posted for much of Virginia and the lower Eastern Shore. And the danger is only slightly less in Central Maryland. Here's how the weather service put it:

"...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
THROUGH WEDNESDAY EVENING...


"THE COMBINATION OF DRY GROUND...DRY AIR...AND STRONG WINDS WILL
LEAD TO POTENTIALLY DANGEROUS FIRE CONDITIONS WEDNESDAY. WINDS
WILL REACH SPEEDS OF 20 MPH...WITH GUSTS TO 35 OR 40 MPH. MINIMUM
RELATIVE HUMIDITY VALUES WILL REACH 20 TO 30 PERCENT. ALTHOUGH
THIS MORNINGS SHOWERS WILL MOISTEN THE GROUND A LITTLE...
PERSISTENT WINDS TODAY AND TONIGHT SHOULD DRY FUELS...PRIMING THE
GROUND BY WEDNESDAY.

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE
RED FLAG WARNINGS."

The Red Flag warnings in Virginia cover all the areas in red on this map.  A Red Flag warning means:

"CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL."

Posted by Frank Roylance at 5:33 PM | | Comments (1) | TrackBacks (1)
Categories: Watches and warnings
        

March 10, 2006

Wind, fire and flood

Oh my, that air felt good this morning - 72 degrees on the car thermometer at 9:30 a.m. But this early breath of spring is also stirring up warnings of wildfire danger and coastal flooding today.

First, there's the forecast:  We're talking a high of 78 degrees this afternoon. Hello ? We haven't seen the 70's at Baltimore-Washington International Airport since Nov. 16, when it was 76 degrees. And we haven't had a 78-degree day since Oct. 6.

The warm air barreling into the Northeast from the Gulf states is rocking small cars and empty trucks. The National Weather Service says we should expect winds of 13 to 21 mph today, with gusts as high as 37 mph. You can watch the top wind speeds at BWI on the strip chart here.

Wind plus low humidity are contributing to increased wildfire hazards. The weather service has issued the following notice:

"...NEAR CRITICAL FIRE CONDITIONS ACROSS THE REGION THIS AFTERNOON...

MINIMUM HUMIDITY OF AROUND 30 PERCENT IS EXPECTED ACROSS PORTIONS
OF THE FIRE WEATHER FORECAST AREA THIS AFTERNOON. THESE VALUES ARE
NOT QUITE RED FLAG CRITERIA....HOWEVER WITH SUSTAINED SOUTHWEST WINDS OF 15 TO 25 MPH...COMBINED WITH VERY DRY FINE
FUELS...NEAR CRITICAL FIRE WEATHER CONDITIONS SHOULD BE
ANTICIPATED.

"THE GENERAL PUBLIC IS ADVISED
TO RESPECT ALL STATE AND LOCAL BURNING LAWS."

Red Flag warnings are posted for the upper Eastern Shore, Delaware and southern New Jersey.

High winds from the south or southeast are also pushing water up the bay, increasing the risk of coastal flooding. Here's the advisory:

"...MINOR TIDAL FLOODING AT TIMES OF HIGH TIDE THROUGH FRIDAY
AFTERNOON...

"STRONG SOUTHERLY FLOW WILL CREATE ABNORMALLY HIGH TIDE LEVELS
THROUGH THIS AFTERNOON. WATER LEVELS OF 1 TO 2 FEET ABOVE
ASTRONOMICAL PREDICTIONS MAY CAUSE MINOR TIDAL FLOODING IN AREAS
THAT ARE PRONE TO PROBLEMS FROM HIGHER THAN NORMAL TIDES.
ALEXANDRIA VIRGINIA AND ANNAPOLIS MARYLAND ARE TYPICALLY
SUSCEPTIBLE TO COASTAL FLOODING.

"UPCOMING TIMES FOR HIGH TIDES ARE AS FOLLOWS...

"ANNAPOLIS MARYLAND...2:49 PM FRIDAY
ALEXANDRIA VIRGINIA...4:54 AM AND 5:18 PM FRIDAY
KEY BRIDGE WASHINGTON DC...5:11 AM AND 5:35 PM FRIDAY
FT MCHENRY BALTIMORE...4:27 PM FRIDAY
BOWLEY BAR...5:18 PM FRIDAY"

You can watch the tides rise here.

Posted by Frank Roylance at 10:50 AM | | Comments (0) | TrackBacks (1)
Categories: Watches and warnings
        

March 1, 2006

Slippery tonight

Rain and lingering cold in parts of Maryland could spell trouble for late-night (or early-morning) motorists tonight as a storm system moves in from the Ohio Valley. The National Weather Service has issued a freezing rain advisory for the northern tier of counties, from Harford west to Allegany. Normally colder valleys may be especially vulnerable.

Heading north? There are winter storm watches and warnings up for eastern Pa., northern N.J. and the NYC area. That means 4 inches of snow or more. Click here.

Things should warm up here in the morning - at least enough to erase the ice threat. And the rain will cease. But it won't be anywhere near the balmy 65 degrees forecast earlier in the week. The cold air to our north has lingered more than forecasters expected, and the warm weather to our south will stay there, holding temps here to about normal for this time of year - mid-to-upper 40s in the daytime, 20s at night.

But once we're clear of the rain tomorrow, the sun will come out, and stargazing should be good for the weekend. And forecasters seem confident that the coastal low that's expected early next week will not push far enough north to affect our region. If it does, cold air here could mean frozen precipitation.

Posted by Frank Roylance at 10:30 AM | | Comments (0) | TrackBacks (1)
Categories: Watches and warnings
        

February 24, 2006

Fire danger

Stiff winds, low humidity and a promise of more to come have prompted the National Weather Service to post a "Fire Weather" Watch for most of Maryland west of the Chesapeake. There's plenty of fuel out there, too. Here's the latest Haines Index map, which shows relative wildfire hazards across the country. We're listed as "moderate."  And, there's no new precipitation in the forecast until Wednesday. So crush those smokes.

Posted by Frank Roylance at 5:59 PM | | Comments (0) | TrackBacks (1)
Categories: Watches and warnings
        

February 3, 2006

Winter storm watch west

The National Weather Service has posted a winter storm watch for far western Maryland -including Garrett and Allegany counties - beginning Saturday afternoon and extending to late Sunday. Accumulations in excess of 6 inches are possible in some spots. And counties in PA and WV to the north and west could see up to 8 inches. Here's the skinny:

"LOW PRESSURE OVER THE DEEP SOUTH WILL TRACK NORTH INTO QUEBEC BY
SUNDAY. AS THIS SYSTEM REACHES PENNSYLVANIA SATURDAY
EVENING...COLD AIR WILL FILTER IN VERY QUICKLY WITH RAIN CHANGING
TO SNOW LATE SATURDAY AFTERNOON. SNOW SHOWERS ARE EXPECTED TO
CONTINUE ALL DAY ON SUNDAY AS MOISTURE IS LIFTED UP THROUGH THE
HIGHER TERRAIN ON WESTERLY WINDS. AT THIS TIME...THERE IS THE
POTENTIAL FOR SNOW ACCUMULATIONS IN EXCESS OF SIX INCHES OR MORE THROUGH
SUNDAY NIGHT.

"A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS."

Posted by Frank Roylance at 4:02 PM | | Comments (0)
Categories: Watches and warnings
        

January 31, 2006

Colder and windy tonight

Better bring in the trash cans. As a storm center moves off the mid-Atlantic coast and intensifies this afternoon, colder air will move in behind the low, blowing in from the northwest with gusts as high as 40 mph this afternoon and tonight. There are gale warnings for the Bay. Here's the landlubbers' advisory from the weather service:

" LOW PRESSURE WILL INTENSIFY AS IT MOVES OFF THE DELMARVA TODAY.
THIS STORM WILL HELP TO GENERATE SOME STRONG WINDS. NORTHWEST
WINDS WILL GUST UP TO 40 MPH ACROSS THE REGION THROUGH EARLY
EVENING. THESE WINDS WILL ALSO USHER IN A MUCH COOLER AIR MASS WITH
TEMPERATURES FALLING INTO THE 30S BY LATE AFTERNOON IN MOST AREAS.

"SCATTERED SNOW SHOWERS WILL EVEN OCCUR IN THE HIGHER ELEVATIONS
WEST OF THE BLUE RIDGE...ALTHOUGH ANY ACCUMULATIONS WILL BE UNDER
ONE INCH.

"BE SURE TO SECURE ANY LOOSE ITEMS ON YOUR PROPERTY DUE TO THE
STRONG WINDS. MOTORISTS SHOULD ALSO USE EXTRA CAUTION."

But the cold blast tonight won't do much to bring in more seasonable temperatures. The forecast still calls for sunshine and highs this week in the upper 40s and low 50s. That's still 5 to 10 degrees above normal for this time of year.

Posted by Frank Roylance at 2:03 PM | | Comments (0) | TrackBacks (2)
Categories: Watches and warnings
        

October 6, 2005

Flood watch, Allegany to the Bay

The National Weather Service has issued a flood watch for all of Maryland from Allegany County in the west, to the Chesapeake Bay in the east. Forecasters are calling for 3 to 5 inches of rain from Friday through Saturday afternoon, as the remnants of Tropical Storm Tammy collide with a cold front approaching from the west. The heaviest amounts should fall west of the Blue Ridge.

The watch actually extends from Northern Virginia, across Maryland and Pennsylvania, clear into central New York State, visible as dark green on this map.

Posted by Frank Roylance at 5:50 PM | | Comments (0)
Categories: Watches and warnings
        

July 27, 2005

Severe T-storms crossing Maryland

5:54 p.m.: The Weather Service is issuing severe thunderstorm warnings ahead of a storm now crossing Maryland ahead of a cold front. The warnings have been issued for Baltimore, Frederick and Montgomery counties. Watches are posted across most of the rest of the state.

Storms are crossing Carroll County, headed for the greater Baltimore region. Here's the radar image. And here's a wider view.

Just to give you an idea of what's happening, it's still 98 degrees in downtown Baltimore at this writing, but the storms and the passing cold front have already dropped temperatures in Westminster, Frederick and Hagerstown to about 81 degrees. It fell 18 degrees in 40 minutes in Westminster. Be careful out there.

Posted by Admin at 5:49 PM | | Comments (0)
Categories: Watches and warnings
        

Severe thunderstorm watch

The National Weather Service has posted a severe thunderstorm watch for the entire state east of Garrett County until 10 p.m. tonight (Wednesday) as a strong cold front approaches from the northwest. The front will relieve our high temperatures once it pulls through. But in the meantime it's 96 at BWI and worse - 98 - at the Maryland Science Center. Radar shows some thunderstorms moving through Washington County, headed toward the Chesapeake Bay.

You can see the dramatic shift in the weather west of the front. It was 94 degrees just before 4 p.m. today in Harrisburg, Pa., and 77 degrees at State College, just 62 miles away to the west.

Posted by Admin at 3:38 PM | | Comments (0)
Categories: Watches and warnings
        

July 26, 2005

Heat falls short of warnings

As suffocatingly hot as it was today, it looks like the high temperatures have fallen short of some of the direst predictions. Yesterday's forecasts warned of highs of 95 or 97 degrees. There were a few mentions this morning of 99 or even 100 degrees.

But the actual high at BWI will likely stick at 94 today, despite strong sunshine all day. (It's the 11th day in the 90s this month, and the warmest at BWI since Aug. 22, 2002, when it was 94.) The Science Center, in downtown Baltimore, reached 97.

With heat index predictions falling short of earlier expectations, the National Weather Service cancelled many of its "excessive heat" warnings for Wednesday, except for downtown Baltimore and Washington. And heat advisories will likely be cancelled later today for communities west of the mountains.

This is the beginning of the end of the heat wave. Wednesday should bring a "cold" front from the northwest, with clouds and cooler temperatures - the mid-80s - by Thursday.

Posted by Admin at 6:00 PM | | Comments (1)
Categories: Watches and warnings
        

July 18, 2005

Heat warnings today

With temperatures headed for the 90s again, and humidities to match, we're in for another stifling July day. The National Weather Service has issued a heat advisory, effective across the region through early evening.

"THE COMBINATION OF WARM TEMPERATURES AND HIGH HUMIDITIES WILL
CONTINUE THROUGH THE FIRST PORTION OF THE WORK WEEK. HEAT INDICES
ARE EXPECTED TO REACH THE 100 DEGREE MARK THIS AFTERNOON AND TUESDAY.

"A HEAT ADVISORY MEANS THAT THE COMBINATION OF HIGH TEMPERATURES
AND HUMIDITY WILL COMBINE TO CREATE A SITUATION IN WHICH HEAT
INJURIES ARE POSSIBLE. DRINK PLENTY OF FLUIDS...STAY OUT OF THE
SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS.

"DO NOT KEEP CHILDREN OR PETS IN CARS WITH WINDOWS ROLLED UP...EVEN
PARTIALLY. TEMPERATURES INSIDE A CAR WITH WINDOWS UP CAN REACH
OVER 150 DEGREES QUICKLY...RESULTING IN HEAT STROKE AND DEATH."

Posted by Admin at 1:12 PM | | Comments (0)
Categories: Watches and warnings
        

June 29, 2005

More t-storms

AT 649 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING ACROSS NORTHERN AND WESTERN MONTGOMERY NORTHEASTWARD
INTO CENTRAL HOWARD COUNTY AND INTO WESTERN BALTIMORE COUNTY JUST
WEST OF BALTIMORE CITY. THIS LINE OF STORM IS MOVING SOUTHEAST AT 15
TO 20 MPH. THESE STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO
45 MPH. THROUGH 745 PM...THE DISTRICT OF COLUMBIA...SOUTHEASTERN
HOWARD...SOUTHEASTERN MONTGOMERY...ANNE ARUNDEL...NORTHERN PRINCE
GEORGES...BALTIMORE CITY AND SOUTH CENTRAL BALTIMORE COUNTIES WILL
BE AFFECTED BY THESE STORMS.

RESIDENTS SHOULD BE ALERT AND BE PREPARED TO SEEK SAFE SHELTER IF
THREATENING WEATHER APPROACHES OR A WARNING IS ISSUED.
- from: SHORT TERM FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
652 PM EDT WED JUN 29 2005

Posted by Admin at 8:19 PM | | Comments (0)
Categories: Watches and warnings
        

June 28, 2005

Hazardous Weather

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
831 PM EDT TUE JUN 28 2005
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 PM FLASH FLOOD WOODLAWN 39.31N 76.75W
06/28/2005 BALTIMORE MD FIRE DEPT/RESCUE
WATER FLOODED UP TO THE HOOD OF A VEHICLE.

___________
Isolated thunderstorms in the Baltimore area has created excessive runoff causing the National Weather Service in Sterling, Va. to issue a flash flood warning through 5:30 p.m. Excessive runoff will cause flash flooding of small creeks, and streams, highways, and underpasses throughout the Baltimore area. At 3:37 p.m. one inch of rain had fallen and another inch could fall by nightfall.
A HEAT ADVISORY IS IN EFFECT FOR THIS AFTERNOON THROUGH 6 PM. HEAT
INDEX VALUES OF 98 TO 103 ARE CURRENTLY FORECAST.

Posted by Admin at 4:57 PM | | Comments (2)
Categories: Watches and warnings
        

June 14, 2005

Heat advisory expires; heat doesn't

The National Weather Service has allowed its heat advisory to expire at 6 p.m. But the temperature at BWI remained at 90 degrees, and the misery index remained high. Here's how Sterling put it:

"THE HEAT ADVISORY HAS BEEN ALLOWED TO EXPIRE AT 6 PM. ALTHOUGH HEAT
INDEX VALUES WERE CLOSE TO 100 DEGREES EARLY THIS EVENING...THESE
VALUES ARE EXPECTED TO FALL BELOW THRESHOLD VALUES AS TEMPERATURES
CONTINUE TO COOL. HOWEVER...HEAT INDICES WILL REMAIN ABOVE 90 THROUGH
THE EVENING. PEOPLE ARE URGED TO DRINK PLENTY OF FLUIDS IF
SPENDING TIME OUTDOORS."

We may get some rain overnight, but the heat will be back tomorrow. Real relief starts Thursday.

And while we simmered today, NASA's Earth-observing AQUA satellite was snapping our picture. Here's how the Eastern U.S. looked from space today. (Click on the upper left-hand image to enlarge it.) Notice the haze we were under, and the thunderstorms brewing to our west.

Posted by Admin at 7:42 PM | | Comments (0)
Categories: Watches and warnings
        

June 6, 2005

Severe T-storm watch posted

The National Weather Service has posted a severe thunderstorm watch for most of Maryland this afternoon. Some storms are already bubbling up out of the heat and humidity in northern Virginia, and they're popping up on radar. There's even a possibility that tornadoes could break out. Here's how to prepare.

We don't usually think of Maryland as tornado country. But while the most powerful twisters are exceedingly rare here, the record books are full of serious, even deadly storms that have touched down over the years. Here's a list, by county.

Posted by Admin at 3:00 PM | | Comments (0)
Categories: Watches and warnings
        

May 4, 2005

Frost advisory extended to much of Maryland

Better cover the veggies. The National Weather Service has extended tonight's frost advisories from Cecil County, to most of the state north and west of Baltimore and Washington, D.C. Advisories had already been posted for much of Pennsylvania, Delaware and New Jersey, including most of the Pennsylvania counties along the Mason-Dixon Line.

Thursday morning's forecast low for Baltimore is 39 degrees - warmer than the last few days. Westminster's low could reach 36. The day's high in Baltimore should be near 62 - 8 degrees below normal.

Lots of schools have already turned off their furnaces for the season - a bit prematurely, it turns out. I know at least one teacher who's wearing sweaters to work this week. There must be plenty to chilly children, too.

Posted by Admin at 1:50 PM | | Comments (1)
Categories: Watches and warnings
        

April 25, 2005

Bill to curb NWS products causes storm

Sen. Rick Santorum , (R-Pa.) has spun up a storm with his proposed bill to limit the kind of weather products the National Weather Service can provide free to the public.

The Senator's concern is that the taxpayer-funded weather service is providing "value-added" products and services that compete with commercial weather providers, such as AccuWeather, which is based in Santorum's home state. The bill would seek to refocus the NWS on its core responsibilities: gathering comprehensive weather data, and issuing watches and warnings that are vital to the protection of life and property.

But some people who have come to rely on National Weather Service data, its routine forecasting, and its Web sites. They're worried that the bill will go too far, taking some useful NWS products off line and forcing users to purchase the same services from the commercial providers. They note that much of the raw data used by the commercial providers may well have originated with the NWS. They object to the prospect of paying a commercial firm for information they have already paid for with their tax dollars.

It's not a new issue, but Santorum's bill brings it into the political limelight again.

Here's how the Palm Beach Post reported the squall.

How do you feel? Should the government be clearing the decks for private weather forecasters to expand their business and their profits? Where should the government's role in forecasting the weather begin and end? Or is there room enough out there for the government forecasters and the weather entrepreneurs to continue to prosper and innovate as they have been ?

Posted by Admin at 11:59 AM | | Comments (3)
Categories: Watches and warnings
        

April 13, 2005

Fire danger rising?

I noticed today that much of Eastern Pennsylvania - including all the counties that border on Maryland - has posted "red flag" wildfire warnings. The warnings note the dry conditions in the woods, low humidity, breezes and clear weather ahead.

Here's the text:

"...A RED FLAG WARNING HAS BEEN ISSUED FOR SOUTHEASTERN PENNSYLVANIA
FOR TODAY...

"THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A RED FLAG
WARNING FOR BERKS, LEHIGH, NORTHAMPTON, BUCKS, CHESTER, MONTGOMERY,
DELAWARE AND PHILADELPHIA COUNTIES IN SOUTHEAST PENNSYLVANIA.

"THE FIRE DANGER WILL BE RUNNING HIGH TODAY. MINIMUM RELATIVE
HUMIDITIES ARE EXPECTED TO BE LESS THAN 30 PERCENT. THE LOW
HUMIDITIES WILL BE COMBINED WITH NORTHEAST WINDS OF 10 TO 15 MPH
WITH GUSTS TO 20 MPH AND VERY LOW FUEL MOISTURE CREATING
DANGEROUS FIRE CONDITIONS, ESPECIALLY THIS AFTERNOON AND EARLY
THIS EVENING.

"AS WINDS DECREASE AROUND SUNSET, SO TOO WILL THE THREAT FOR
DANGEROUS FIRE CONDITIONS.

"ON THURSDAY, WINDS OF 10 TO 20 MPH COULD DEVELOP AND ALSO OCCUR OVER
MOST OF EASTERN PENNSYLVANIA. THEREFORE, A FIRE WEATHER WATCH AND OR
RED FLAG WARNING MAY BE NEEDED."

There are no such warnings posted south of the Mason-Dixon line. But that's because Maryland has a slightly higher wind threshhold for posting them.

But the National Weather Service does report "moderate" fire danger today in portions of the state. That's a "5" on the Haines Index.

Monte Mitchell, state fire supervisor for the Maryland Forest Service, said today that "We're in similar shape" to Pennsylvania. "The fire danger is still high. We're certainly keeping an eye on things ... This is probably the driest stretch yet for this spring fire season."

Humidities are very low - just 26 percent at BWI at last check. (It's 41 percent in Denver.) And the forecast remains clear and dry at least through Tuesday. So be careful with your smokes and open burning this weekend.

Posted by Admin at 2:25 PM | | Comments (0)
Categories: Watches and warnings
        

October 21, 2004

Now, it's east wind, high tides

This just in from the National Weather Service:

"Persistent northeast wind flow the last couple of days has resulted
in tides about one and a half feet above normal in the Chesapeake Bay
and the tidal Potomac. Northeast winds averaging 10 to 15 mph are
expected to persist through Saturday. This will result in tide levels
to run about 2 feet above normal tonight through Saturday over the
Chesapeake Bay and tidal Potomac. This will result in some minor
tidal flooding in the more prone areas."

High tides...

Baltimore... 215 am Fri... 231 PM Fri... 320 am Sat.
Washington DC... 321 am Fri... 407 PM Fri... 433 am Sat.
Annapolis... 1211 am Fri... 1227 PM Fri... 116 am Sat

Posted by Admin at 2:40 PM | | Comments (0)
Categories: Watches and warnings
        

October 5, 2004

Frost on the pumpkin tonight

It's Oct. 5. Do you know where your windshield scraper is?

The National Weather Service has issued frost advisories for tonight from the northern and western suburbs of Baltimore and Washington westward to Allegany County. The boys in Sterling say that means it will get cold enough to form frost instead of dew on exposed surfaces - like pumpkins, flowers and windshields. After Oct. 15 they don't bother with such advisories, figuring the growing season, and the risk to growing things, is over. The forecast low for BWI tonight is 41 degrees. But Hunt Valley will reach 37. (It doesn't have to get to 32 degrees to form frost. Something about saturated vapor pressure. Don't ask.)

There's a freeze warning out in Garrett County, where the low could dip to 30. Not that those hardy, just-barely Marylanders would notice.

Posted by Admin at 10:57 AM | | Comments (0)
Categories: Watches and warnings
        

October 4, 2004

Throw another dog on the bed!

Yikes! It's only the first week of October and the first frost and freeze warnings of the season were posted for Maryland tonight. BWI should only fall to 50 tonight (and 43 tomorrow). But Garrett County is looking at a freeze warning and a low of 32 degrees both nights. Frost warnings are up for Allegany, Washington and Cecil counties, too. I've already pushed the thermostat switch from "Cool" to "Heat." I expect I'll hear it kick on tonight.

You don't want to hear this, but the earliest freeze at BWI was 31 degrees on Oct. 4, 1974 (exactly 30 years ago). The earliest measureable snow was 0.3 inch on Oct. 10, 1979.

By the way, did anyone spot that gorgeous three-quarter moon rising Sunday night about 10 p.m.? Just about drove off the eastbound Inner Loop admiring it.

Posted by Admin at 7:03 PM | | Comments (0)
Categories: Watches and warnings
        
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This site is the Maryland Weather archive. The current Maryland Weather blog can be found here.
Frank Roylance is a reporter for The Baltimore Sun. He came to Baltimore from New Bedford, Mass. in 1980 to join the old Evening Sun. He moved to the morning Sun when the papers merged in 1992, and has spent most of his time since covering science, including astronomy and the weather. One of The Baltimore Sun's first online Web logs, the Weather Blog debuted in October 2004. In June 2006 Frank also began writing comments on local weather and stargazing for The Baltimore Sun's print Weather Page. Frank also answers readers’ weather queries for the newspaper and the blog. Frank Roylance retired in October 2011. Maryland Weather is now being updated by members of The Baltimore Sun staff
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