Here is today's video forecast. With each weather system changing character as it moves, it's a good idea to keep checking back for the latest info from AccuWeather.com.
With very warm air across the southern Plains and cool air farther north, the setup favors the development of showers and thunderstorms in the contested zone. As a series of cool air pockets aloft moves over this zone, a new batch of storms takes shape with each disturbance. The result is heavy rain, with the most at locations with multiple events. This map shows one-week rainfall totals from last night's ECMWF (European) mode. Note how varied the prediction is for the Middle Atlantic coast. Only a small change in the size or track of any disturbance during this period could produce a very different result.
On the south side of each new thunderstorm-producing disturbance, violent thunderstorms will erupt.
On this map from 10 a.m. ET Thanksgiving Day, you can see the high pressure area that is causing dry and mild weather in the East and the cold front farther west.
During the late afternoon and early evening hours, the cold front of a knife will slice through the turkey and cause it to accumulate 1-2 inches on plates...
This satellite picture shows clouds over parts New York and Pennsylvania, as well as areas of low clouds, fog and snow cover from Michigan to Illinois. Most of the Northeast should have at least some sunshine through Thanksgiving Day.
As we go through the week, the flow aloft over the East will become southwesterly. This will promote a major warmup. This map shows the projected upper-air flow for Thanksgiving afternoon:
A major snowstorm will affect the area from Iowa to Michigan tonight and tomorrow. At first, snow can melt on streets, but as it continues and the temperature drops, the area impacted by slippery conditions will increase dramatically. This map shows expected accumulations:
This map shows two cold fronts in the northeast quarter of the nation; 9 a.m. ET temperature are plotted. The isobars are closest together over the central and western Great Lakes, and this is where the strongest winds were occurring.