Friday, February 5, 2010

How We Get Big Snow Storms

This composite satellite image shows that the storm bearing down on us is formed by the meeting a river of moisture flowing north from the Gulf of Mexico and a mass of cold, damp air flowing from the northwest. On the radar loop you can watch the moisture flowing north and then starting diffuse as it meets the cold air. At that meeting point the heaviest snow will fall, and that point is forecast to be right over Maryland all night.

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