CASPER, Wyo. — Winter weather advisories are in effect for most of Wyoming as a prolonged snow event creeps into the state from the northwest, according to the National Weather Service in Riverton.
Snowfall of 5–12 inches is possible Friday night through Sunday in the lower elevations east of the Continental Divide, including Natrona County. The Tetons could get two feet by Monday morning.
“This will be a long-duration event with impacts to travel for several days,” the NWS in Riverton said; “Travel could be very difficult to impossible.” Patchy, blowing snow with significantly reduced visibility is advised.
Temperatures approaching 30 degrees below normal, along with gusty winds, could make travel difficult to impossible at times in areas of the state.
Cold arctic air is expected to follow the system Sunday into next week, the NWS in Riverton said. Lows in the negative teens and 20s are expected Sunday and Monday night, with the bottom of some basins reaching minus 30 or below Monday night.
The NWS in Riverton also advises that frostbite could occur on exposed skin in as little as 30 minutes with this event.