CASPER, Wyo. – The National Weather Service in Riverton issued its latest storm forecast in a conference call on Sunday afternoon.
The storm is making its way through the northern section of Wyoming, and is expected to bring snow and very cold temperatures to Natrona County by tonight.
Up to a foot of snow in lower elevations is possible, with 18 inches on Casper Mountain. The heaviest snowfall will be tonight through Monday morning.
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Wind gusts up to 30 mph will cause blowing and drifting snow in areas along I-25 and highways around Casper. Whiteout conditions are likely in some areas.
The storm will move through the entire state overnight, making travel “very difficult to impossible,” said the NWS. Road closures lasting over 24 hours are possible in some areas. Aviation delays or cancellations are also possible, says the NWS.
“The most significant blowing snow will occur across SE Fremont, S. Johnson, Natrona and Sweetwater counties,” said the NWS. “This includes I-25 and I-80, as well as South Pass.”
Tonight’s low will hit 14 degrees, with possible chill values minus 7. A high of just 18 degrees is expected Monday, with an overnight low of 6 degrees.