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August 28, 2009

Danny's a mess, but still a player

Tropical Storm Danny still had not managed to pull itself together into a proper spiral Friday morning. And the central pressure in the storm (29.77 in.) wasn't much lower than the pressure out on the WeatherDeck in Cockeysville  (29.99 in.)

DannyMaximum sustained winds at the storm's center were barely 40 mph, only a few mph above falling back to the status of tropical depression. Here's some interesting discussion of Danny's troubles from the National Hurricane Center.

But Danny continues to move toward the Outer Banks, and its winds and waves will remain a threat to swimmers and boating along the mid-Atlantic Coast this weekend. Here is a bit of the forecast advisory this morning:

"LARGE SWELLS FROM DANNY ARE EXPECTED TO PRODUCE DANGEROUS SURF
CONDITIONS AND LIFE-THREATENING RIP CURRENTS ALONG THE U.S. EAST
COAST DURING THE NEXT DAY OR TWO. PLEASE CONSULT STATEMENTS ISSUED
BY YOUR
LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICE FOR MORE
DETAILS
."

Tropical Storm Watches have been posted for the Outer Banks. Tropical Storm Warnings are up for Maryland's offshore waters.  Here is the latest advisory forDanny track Danny. Here is the forecast storm track. And here is the view from space.

While we slept .... assuming you could sleep with all the thunder and lightning ... the Baltimore region was visited by some impressive thunderstorms. We clocked 1.18 inches of rain on the WeatherDeck. The NWS instruments at BWI-Marshall recorded 1.4 inches.

Towson and Sykesville both reported an impressive 2.89 inches. Many locations across Central Maryland reported more than an inch of rain overnight. Here are some other measurements from the CoCoRaHS network.

The storms caused some flooding, and did some damage to trees and electrical lines. Here is the link to the NWS tally of storm damage reports. (Be sure to click on earlier versions for more reports.) And here is the tally of BGE power outages, which don't seem to have been too extensive.

With all that rain, the ground is pretty well saturated, forecasts say. And the forecast calls for continuing showers and storms today. So, the National Weather Service has posted Flash Flood Watches across the region from 2 p.m. Friday until late Friday night.

Posted by Frank Roylance at 8:15 AM | | Comments (0)
Categories: Hurricanes
        

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About Frank Roylance
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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