Weird weather in June is commonplace in Wyoming/Montana and the two states are confirming that fact with some unseasonably cold weather and lots of snow today.
Right now Big Sky appears to be the winner with its upper elevations seeing close to a foot of new snow in the last 48 hours.
“Snow, mixed with rain at times, is falling in the western mountains and will linger through Tuesday.” – NWS Riverton
That said, look for the Tetons to pull down significant snow totals tonight through the early morning hours. All the new snow will likely do wonders for wildfire and river conditions well into the autumn months.
LET IT SNOW!
Winter Weather Advisory [Teton Pass]
An unseasonably strong late Spring storm will produce significant snowfall across the Western Wyoming Mountains through today. Sharply colder moisture laden air will be circulating around the back side of an upper low pressure system as it tracks across the northern border of Wyoming. This much colder air will also lower snow levels all the way down to the valley floor at times early this morning. Snow amounts will likely range anywhere from from 3 to 10 inches above 7500 feet along with some isolated amounts of up to 12 inches in the Tetons by this evening. A trace to 2 inches of snow is expected to accumulate in the Western Wyoming Valleys by noon today before melting off this afternoon.
…WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING…
* TIMING…The precipitation should changeover to all snow this morning. Snow will continue through the day.
* TOTAL SNOWFALL…4 to 10 inches in the Tetons along with isolated amounts of 12 inches. 4 to 8 inches on the Gros Ventre Range.
* MAIN IMPACT…Highway 22 over Teton Pass will likely become slick and snow covered. 20 to 30 mph winds along with 40 mph gusts could produce blowing and drifting snow. Wind chills will likely be as low as 15 to 25 degrees in exposed areas.