The National Weather Service has extended the Winter Storm Warning over the immediate metro area and now includes the District as well as Fairfax, Prince William, southern Fauquier, and Stafford counties in Va. and Anne Arundel and Prince George's county in Maryland. Calvert, Charles, and St. Mary's county remain under a Winter Weather Advisory. The Warning is in effect through 4 a.m. for the potential for 5-10 inches of snow. It is also warning about "dangerous" travel conditions developing around 4 p.m. with snowfall rates of 2 inches per hour.
The National Weather Service has issued a Winter Storm Warning for Montgomery, Howard, and Frederick counties in Maryland and Loudoun and northern Fauquier counties in Virginia from 7 a.m. this morning through 4 a.m. Thursday morning. It is forecasting 4-8 of snow in this area with the possibility of greater amounts in the higher terrain. For the District and points south and east, the NWS has issued a Winter Weather Advisory from 10 a.m. this morning through 4 a.m. Thursday morning.
The National Weather Service has posted a Winter Storm Watch for the north and west suburbs from Wednesday afternoon through late Wednesday night. Counties in the watch include Frederick, Carroll, northern Baltimore, Harford, and Montgomery in Md. and Rappahannock, Loudoun and northern Fauquier in Va. The watch indicates the potential for five inches or more of snow.
The entire region is now under a Winter Weather Advisory effective 4 p.m. Tuesday to 6 a.m. Wednesday.
With the details of this developing storm yet to fully crystallize, one might be tempted to call this a "wait and see" situation. But we do have some confidence that there will be some snow tomorrow, possibly significant, and that conditions will generally deteriorate as you head northeast.
The National Weather Service's Storm Prediction Center (SPC) has issued a tornado watch until 10 a.m. for the entire metro region. Specifically, the watch includes: DISTRICT OF COLUMBIA CENTRAL AND SOUTHERN MARYLAND NORTHERN VIRGINIA FAR EASTERN WEST VIRGINIA COASTAL WATERS