Snow Across the Great Lakes, Central Appalachians, and Northeast; Unsettled Weather in the West

Light to moderate snow will continue into Saturday over the Great Lakes, Central Appalachians, and Northeast. This weekend into next week, a series of atmospheric rivers will bring gusty winds, periods of heavy rain, and mountain snow to northern California and the Pacific Northwest. Colder temperatures are in store for the weekend from the Great Lakes to East Coast. Read More >

The image below is a 1000m resolution, "true color" image from the MODIS satellite valid today - 1 February 2012. A couple interesting features noted on the image are described below:

Areas in "brown" are predominantly void of snow. As such - a vast majority of South Dakota is completely snow free! Obviously, this is quite rare for the 1st of February.
The "brown ground" is able to absorb much more solar energy, which allows temperatures to warm. This is a major reason why temperatures have remained above normal.
Residual areas of snowcover (white) are confined to the Black Hills region in western South Dakota and the Glacial Lakes region in northeastern South Dakota.
A large section of Lake Oahe north of Pierre is free of ice (dark blue color). Again, very rare for early February.

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Snow Across the Great Lakes, Central Appalachians, and Northeast; Unsettled Weather in the West

Image of the Day - Satellite Image of a Snow Free South Dakota