Snow on the way
Major change in the weather
by National Weather Service
October 7, 2008
A major change to colder and snowy weather is headed for much of central and western Wyoming Thursday night through Saturday.
A cold storm system over the Gulf of Alaska is forecast to drop into the Great Basin Wednesday into Thursday and then stall out over the southern Idaho, northern Utah area Friday into Saturday. At the same time, cold air will plunge southward out of Canada providing for strong upslope east of the divide, especially Thursday night through Saturday. Snow will likely develop in the mountains by Thursday night, possibly becoming heavy at times and continuing through Saturday. The most significant mountain snowfall will likely be over the Wind River Mountains, east slope of the Absarokas, Owl Creek and Bridger Mountains., southern Big Horns and Casper Mountain.
The lower elevations of central and southwest Wyoming will also have the potential for significant snowfall Friday and Saturday. The first piece of this system will bring an increasing chance of rain showers to these areas Thursday. Colder air and increasing upslope flow will develop Thursday night and Friday with rain changing over to snow.
The Cody foothills will likely see rain change over to snow by sunrise Friday and possibly the Lander foothills. It also appears that other areas such as the Wind River Basin and lower elevations of Johnson County will also see rain change over to snow during the day Friday including Riverton and Buffalo. Casper will see a cold rain or rain and snow mixture Friday, possibly changing over to all snow by afternoon. All areas will see snow Friday night and quite possibly through the day Saturday.
Snowfall amounts are still uncertain but the potential for 6 to 12 inches of snow does exist across the lower elevations east of the Divide and in the Upper Green River Basin. The east slope of the Wind River Mountains, the Owl Creek and Bridger Mountains, the southern end of the Absaroka Mountains, the southern Big Horns and Casper Mountain may see over a foot of snow.
Hunters, travellers and others with outdoor interests should pay close attention to the weather forecast over the next couple days. The mild, early fall weather is about to come to a screeching halt. Listen to NOAA weather radio or your favorite media outlet for the latest forecasts and winter statements.
FOR:
Yellowstone National Park
Absaroka Mountains
Cody Foothills
North Big Horn Basin
Southwest Big Horn Basin
Southeast Big Horn Basin
Owl Creek and Bridger Mountains
Bighorn Mountains West
Bighorn Mountains Southeast
Northeast Johnson County
Southeast Johnson County
Teton and Gros Ventre Mountains
Jackson Hole
Wind River Mountains West
Wind River Mountains East
Upper Wind River Basin
Wind River Basin
Lander Foothills
Green Mountains and Rattlesnake Range
Natrona County Lower Elevations
Casper Mountain
Star Valley
Salt River and Wyoming Ranges
Upper Green River Basin Foothills
Upper Green River Basin
South Lincoln County
Rock Springs and Green River
Flaming Gorge
East Sweetwater County
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