December 23, 2016 10:34 pm MT
RAPID CITY, SD A blizzard will develop Christmas Day over western South Dakota. Travel will become treacherous and likely impossible on the western South Dakota Plains.
A strong storm over the Rockies will track from Colorado into central South Dakota on Christmas Day, producing heavy snow, sleet, freezing rain, and gusty winds over the Black Hills region.
Snow will develop over northeastern Wyoming late Christmas Eve and spread into western South Dakota Christmas morning. A mix of snow, sleet, and freezing rain will develop over central South Dakota and turn to snow in the afternoon. The snow will end late Sunday night. Strong wind gusts will increase Christmas Day afternoon and persist through Monday morning, causing blowing snow. Wind chill readings will fall to -5 to -20 by Monday morning.
THE COMBINATION OF WIND AND SNOW WILL PRODUCE DANGEROUS WHITEOUT CONDITIONS. DO NOT ATTEMPT TO TRAVEL DURING THE STORM.
Rapid City, SD Weather Forecast Office