Upper Midwest Blizzard
Posted by JAC on 12/12/2010, 6:04 am
http://kamala.cod.edu/mn/latest.nous43.KMPX.html








A large and intense cyclone produced heavy snowfall and blizzard conditions across much of he Upper Midwest region on 11 December - 12 December 2010.

AWIPS images of 4-km resolution GOES-3 6.5 m "water vapor channel" data (above) showed the evolution of several important storm features, including a well defined dry slot, deformation zone, and Trough of Warm Air Aloft (TROWAL).

The highest snowfall totals with this storm included 21.5 inches at Shakopee, Minnesota and 18.0 inches at Menomonie, Wisconsin.

A closer view using AWIPS images of 1-km resolution MODIS 11.0 m IR and POES AVHRR 10.8 m IR data (below) revealed the presence of widespread convective elements are various points in the storm's life, with many exhibiting cloud top IR brightness temperatures as cold as -65 C (darker red color enhancement).

















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Upper Midwest Blizzard - JAC, 12/12/2010, 6:04 am
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