Northeast: Fine Weather Today and Tomorrow

Tuesday morning

Here is today's video, with a look at a Friday forecast challenge for the Middle Atlantic states. The map below the video illustrates the concern for Friday.

On this map, we see the flow coming toward D.C., Baltimore, Philadelphia and New York City originates over the cool waters of the Atlantic. In contrast, the flow on the west side of the Appalachians comes from where it is hot. The boundary between the air masses will move north, its timing determining when each place becomes warmer.