MinT1_conus-Sep-2014

The big chill comes early – record winter blast hits Northern Plains

Massive early cold wave –  Nearly an inch of snow at Rapid City. This is the earliest recorded snowfall going back to 1888. Source: NOAA Mount Rushmore from NWS Rapid City Twitter Feed: A television Meteorologist in Sioux Falls, SD had this to say: Brandon Spinner ‏@wxSpinner89 Sep 11 Way too early for this. Even…

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NASA on ‘the big chill’ this winter: ‘In some places temperatures were 40°F colder than average’

Blistering cold air from the Arctic plunged southward this winter, breaking U.S. temperature records.  A persistent pattern of winds spins high above the Arctic in winter. The winds, known as the polar vortex, typically blow in a fairly tight circular formation. But in late December 2013 and early January 2014, the winds loosened and frigid…