Plummeting Temperatures Overnight

 Surface high pressure will build into the Upper Midwest and Central Plains tonight.  This will diminish winds and help bring a drier air mass into the region.  Strong radiational cooling will be occurring due to the snow cover still in place.

Overnight low temperatures are expected to bottom out in the Platte River Valley, to readings from minus 5 to minus 8 degrees. The coldest locations will be across Sheridan County where temperatures could dip to around ten degrees below zero before dawn.

Surface map position at midnight CST
(Surface map positions around midnight Central Standard Time)
Surface map positions at 6 am Central Standard Time Tuesday, December 6th
(Surface map positions at 6 am CST on Tuesday, December 6th, 2011)
Forecast overnight low temperatures
(Forecast overnight low temperatures)

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