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February 2, 2010

1 to 2 inches possible Tuesday night

Just to keep us in the mood, the winter of 2009-10 is preparing to dish up another taste of the season tonight as two low-pressure systems converge on the mid-Atlantic. One is approaching from northern Illinois, while the second moves up from the south to become the latest coastal system to affect the region.

AccuWeather.comThe NWS at Sterling has issued a Winter Weather Advisory for all Maryland west of the bay except Calvert and St. Mary's counties, where the precipitation could be rain depending on where the rain/snow line settles. The advisory calls for 1 to 3 inches of snow elsewhere across the region by daybreak Wednesday.

The snow would begin in the southwestern portions of the forecast area, down in Virginia, with 1 to 2 inches by early afternoon if the forecast holds up. The precipitation, starting as rain south and east of the I-95 corridor, would then and move north and east, reaching the Baltimore area in the late afternoon, between 5 and 7 p.m., forecasters said.

Snow accumulations would begin sometime after sunset Tuesday, with 1 to 2 inches in the DC area. 

Here's on the Tuesday/Wednesday snow.

Meanwhile, forecasters are continuing to watch the weekend weather. An offshore track would ensure we get mainly snow here, but limit the amount of moisture available, they said. A more northerly track would bring more moisture, but slide the rain/snow line closer to the metro areas.

Here's what AccuWeather is saying about the weekend event. Here's Mr. Foot's take on it.

Posted by Frank Roylance at 10:22 AM | | Comments (7)
Categories: Forecasts


Snow in Baltimore during evening rush hour. Hoo boy.

NWS just upped it to a Winter Storm Warning for the immediate Baltimore/DC area.

Love it. Looks like "abundance of caution" is the watch-phrase.

G'morning Frank,

Last night and this mornings model data indicate we will get 2-4". The trend has been stronger with the western precip shield of the low developing along the SE coast. This is likely do to the coastal low interaction with a digging shortwave over the Ohio Valley.

Anyway this should become bigger news as the day goes on. Folks are so focused on what might happen Fri-Sat that they are oblivious that there will likely be inches of snow tonight not flurries or showers as forecast until yesterday.

For what it's worth, NWS just bumped up their winter weather advisory to a winter storm warning for tonight. They're now calling for 3-6". We'll see if it pans out -- my guess is that they want to err on the side of over-forecasting after this past weekend's storm.

Just upgraded to Winter Storm Warning...3-6 by daybreak

I always find it interesting how Mr. Foot and the other forecasters are always so far apart until the storm is upon us. Yes, Mr. Foot is hedging the forecast right now, which is prudent, but it seems he is more willing to call what the POTENTIAL of the storm is before most of the other forecasters are.

I'm moving to San Diego...who's with me!

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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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