Snowstorm departing Colorado, Wyoming

May 12, 2010; 2:05 PM ET
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Wyoming and parts of Colorado had a disruptive snowstorm Tuesday night and Wednesday morning as a storm system swept in from the west.

This same storm brought up to a foot of snow to the Sierra Nevada Monday and dumped even higher amounts in the mountains of of Wyoming.

Pine Bluffs, Wyo., picked up over over 9 inches of snow, and even Denver, Colo., got in on the act with 2.4 inches.

A couple of inches of snow whitened lawns in Scottsbluff, Neb., while the Black Hills of South Dakota picked up amounts of up to one foot.

So is this unusual? Not really. The high country in the West is accustomed to getting snow this late in the season. All that is required is for the mid- and upper portions of the atmosphere to be quite cold. When this condition is met, any storm that passes is likely to bring snow instead of rain.

This storm will show its severe thunderstorm side farther east into the central and southern Plains Wednesday night and as far east as the Ohio Valley Thursday.

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