Special Weather Statement
Issued by NWS Riverton, WY

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WWUS85 KRIW 181812
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Special Weather Statement
National Weather Service Riverton WY
1212 PM MDT Tue Apr 18 2017

WYZ001-002-012-014-015-024-182200-
Yellowstone National Park-Absaroka Mountains-
Teton and Gros Ventre Mountains-Wind River Mountains West-
Wind River Mountains East-Salt River and Wyoming Ranges-
Including the cities of Lake, Mammoth, and Old Faithful
1212 PM MDT Tue Apr 18 2017

The quick moving upper level disturbance that brought mostly light
rain and snow to the mountains of western Wyoming this
morning is exiting the area. A few light rain and snow showers
along with intervals of sun is expected for this afternoon. Then
another episode of snow showers will return to the Tetons and
southwestern mountains tonight. New snowfall accumulation tonight
should range from 3 to 5 inches in the mountains above 7500 feet to
1 to 2 inches in the valleys. The heaviest snowfall is expected
to occur between midnight tonight and sun up Wednesday morning
above 8500 feet.


$$

WYZ027>030-182200-
South Lincoln County-Rock Springs and Green River-Flaming Gorge-
East Sweetwater County-
Including the cities of Kemmerer, Cokeville, Rock Springs,
Green River, and Wamsutter
1212 PM MDT Tue Apr 18 2017

Heavy rain showers and a few thunderstorms possible later this
afternoon and evening as a quick moving upper level disturbance
moves across the southern Wyoming. Best chances for thunder will
occur between 3 PM and 6 PM with gusty outflow winds also a
possibility.


$$

WYZ019-182200-
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
1212 PM MDT Tue Apr 18 2017

Heavy rain showers and an isolated thunderstorm possible this
evening across the Green and Rattlesnake Mountains and foothills.
Then rain showers will turn to a rain snow mix or all snow showers
after midnight tonight above 6500 feet. One to three inches of
accumulating snow possible by Wednesday morning mainly above 7000
feet. Best chances for thunder will occur between 6 PM and 8 PM
with gusty outflow winds also a possibility.

$$

WYZ008-009-182200-
Bighorn Mountains West-Bighorn Mountains Southeast-
1212 PM MDT Tue Apr 18 2017

Snow returns to the Bighorn Mountains tonight and continues
through Wednesday morning as another upper level disturbance
moves across Wyoming. New snowfall accumulation through Wednesday
morning will range between 1 and 3 inches above 7500 feet, 3 to 6
inches above 8500 feet, and 7 to 10 inches above 10000 feet. The
heaviest snowfall is expected to occur between midnight tonight
and noon Wednesday. Expect slushy to snow covered roads along
Powder River and Granite Passes tonight and Wednesday through the
early afternoon hours.

$$

TEAM RIVERTON



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