Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have 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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Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

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