Excessive Rainfall in the Southern Plains; Extreme Heat Coming to the Southwest U.S.

Heavy to severe thunderstorms may bring areas of excessive rainfall and flooding over parts of the southern Plains through Friday. A Slight Risk of excessive rainfall has been issued. Dangerously hot temperatures are forecast across parts of southern Arizona and far southeastern California Saturday through Monday. An Extreme Heat Watch has been issued. 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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Excessive Rainfall in the Southern Plains; Extreme Heat Coming to the Southwest U.S.

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