Building a Weather-Ready Nation
A strong cold front will move into western Wyoming on Saturday, bringing much colder and wetter conditions across the area this weekend. This includes Yellowstone and Grand Teton National Parks. Daytime high temperatures will be in the low to mid 40`S in the mountains with low to mid 50’s in the valleys. Nighttime lows will drop into the low 20’s in the mountains and to just below freezing in the valleys. The front will move through the rest of the state on Saturday night into Sunday morning.
Wetter conditions will accompany this front, with some rain and snow expected across the north and west. Snowfall of up to 6 inches is possible across the mountains by late Sunday, with lesser amounts in the valley locations. Snow accumulations are expected to remain light in valley locations to do warm ground temperatures.
Additionally, winds will begin to increase out of the southwest ahead of the front on Saturday and will then shift to the west-northwest and will remain strong through the evening hours, especially east of the divide and across the Absarokas and Wind River mountains. Once the winds die down and the cold air at the base of the upper level trough settles in, temperatures will plummet in valley locations…falling below freezing in many areas of the south and west on Saturday night into Sunday morning. The falling temperatures could cause damage to vegetation across Sweetwater County, the upper green river basin, the upper Wind River basin, star valley, Jackson hole, and other valleys of the west.
THOSE WITH OUTDOOR PLANS SHOULD BE PREPARED FOR MUCH COLDER TEMPERATURES AND TAKE CARE ON AREA ROADWAYS AS HAZARDOUS DRIVING CONDITIONS MAY DEVELOP... ESPECIALLY OVER HIGHER ELEVATION PASSES.
Also, remember to check out the latest Multimedia Weather Briefing for more information on the weather this weekend.
Please monitor the weather this weekend to stay on top of this rapidly developing storm.
The above image shows the expected surface wind speed on Saturday afternoon. Winds will increase and shift to a more westerly direction after the front passes and will then taper off through the evening hours.
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This image shows the expected low temperatures Saturday Night / Sunday morning.
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