Wednesday 11 a.m.
Exceptionally warm air for this time of year has reached the Middle Atlantic states, and this afternoon's temperatures will rival records set 91 years ago (1922). In Washington, D.C., the record of 89 is threatened. However, the early-season heat that year did not signal an exceptionally hot summer. No record highs were set in 1922 from May through the summer. Of course, once any record is broken, the old one and its year are replaced in updated records. So, if today's record is surpassed, 1922 won't show up in April's listings in future years. Because of this, we can't tell just by looking at all-time records how hot or cold the overall weather was at any given time.
This video shows how things should transpire from today through early next week.
An important concern this afternoon and evening will be the threat of thunderstorms with damaging winds and hail from Ohio to the Middle Atlantic coast. This radar picture from around 11 a.m. EDT shows a line of thunderstorms racing into central Ohio. With heating taking place downwind, thunderstorm activity is likely to increase during the afternoon. Remember that if a severe thunderstorm warning is issued for your location, your best move is to move to the nearest available safe place immediately until the danger passed.
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.