Big Regional Differences

Friday 9 a.m.

For a few days, the GFS model (a major U.S. model) has suggested that conditions may be favorable for snow showers downwind from the Great Lakes and into the mountains from West Virginia northeastward in about two weeks. The timing and extend of the event is changing with each new model run, but we expect that in a 12- to 16-day forecast.

In the short range, we see a low pressure area affecting the Middle and North Atlantic states. Most of the rain last night was organized into a band that extended from the ocean west-northwest through Maryland, Delaware and southern New Jersey into southern Pennsylvania. Harrisburg, Pa., had 6.35 inches of rain through 8 a.m. EDT. This means they had nearly double the average rainfall for the entire month of October in just one day! No wonder there has been major street flooding and widespread flooding of creeks and streams.

This radar composite shows the main rain area as it existed just after 8 a.m. EDT. The rain was moving toward the west-northwest, tending to dissipate as it moves through western Pennsylvania.

Here is today's forecast video for the weekend, plus a peak at what it may look like at the end of the week after next.