Thursday 10 a.m.
An area of rain and thunderstorms that covered West Virginia and the western parts of New York and Pennsylvania is spreading east and northeast today. Moisture from Andrea will come next, and the I95 corridor could have very heavy rain as the storm approaches from the southwest tomorrow and tomorrow night. Street and highway flooding could cause a real slowdown for travelers and commuters, but it appears the storm will move quickly enough that there is little chance for flooding on the major rivers.
My Northeast video from Thursday morning:
Andrea, the season's first tropical storm, will move northeast along the Eastern Seaboard causing heavy rain and gale-force gusts. The rain can fall very heavily, causing sudden street flooding and very poor visibility. Quite a few models are in use, and this map shows there is widespread agreement on where the center of this storm is going.
This is the chameleon month of March. Always searching for a sense of identity, its days stagger through punches of waning winter, dance with the sunlit caresses of coming spring and hide behind thick clouds through the wind-swept battles between the two.
In the early to middle part of next week, there could be a hint of spring in the region from Illinois to New Jersey. This is a forecast map for next Tuesday morning. The average rain-snow line is midway between the last blue dashed line and the first red dashed line, and.... is that a daring daffodil???
There is uncertainty about how far north a storm from the Gulf states will come on Friday. This morning's NAM is rather bullish on the system. However, it suggests milder weather for the Northeast for a while this weekend before the next cold front arrives.
Many people have requested some real spring weather in the Northeast. Looking out two weeks with the European model, it still looks chilly on this flow aloft forecast for March 19.
This map shows accumulations as of 8 a.m. They have continued to increase since then in Delaware, Maryland and Virginia.
The northward extent of the snow will be determined the progress of snow that was showing up this picture from the radar serving southwest Ohio. The is what it looked like just after 7PM ET.