Wednesday morning water vapor image
Special Weather Statement National Weather Service Riverton WY 300 AM MST Wed Dec 11 2019 WYZ013-023-025-120000- Jackson Hole-Star Valley-Upper Green River Basin Foothills- Including the cities of Jackson, Afton, Alpine, Star Valley Ranch, Thayne, and Pinedale 300 AM MST Wed Dec 11 2019 ...Accumulating Valley Snow Expected Thursday and Friday... A steady stream of Pacific moisture will feed into western Wyoming Thursday and Friday. Snow and an increasing southerly wind are expected to impact the western valleys both days... * SNOW...Moderate to heavy snow. Total accumulations of 4 to 8 inches with local amounts of 10 to 12 inches. * WIND...South to southwest wind of 10 to 15 mph will increase Thursday night with speeds 15 to 30 mph. This could cause blowing and drifting snow, particularly in open areas of Jackson Hole. * WHERE...Jackson Hole, the Star Valley, and around Bondurant. The heaviest snow is expected to fall in Grand Teton National Park across the north half of Jackson Hole, in the mountain foothills on the eastern side of the Star Valley, and from Hoback Canyon into Bondurant. * WHEN...Thursday through Friday. * ADDITIONAL DETAILS...Temperatures may hover at or just above freezing for much of the day Thursday, which may hinder snow accumulation on the valley floor. There is still uncertainty as to how much snow could fall Thursday, but the potential for heavy snow certainly exists through Thursday evening. Snowfall will decrease in intensity through the day Friday.