Special Weather Statement
Issued by NWS Riverton, WY

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WWUS85 KRIW 200620
SPSRIW

Special Weather Statement
National Weather Service Riverton WY
1120 PM MST Mon Feb 19 2018

WYZ001>020-022>030-201600-
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-
Including the cities of Lake, Mammoth, Old Faithful, Cody,
Meeteetse, Thermopolis, Worland, Buffalo, Kaycee, Jackson,
Dubois, Riverton, Shoshoni, Lander, Jeffrey City, Casper, Afton,
Alpine, Star Valley Ranch, Thayne, Pinedale, La Barge, Big Piney,
Farson, Kemmerer, Cokeville, Rock Springs, Green River,
and Wamsutter
1120 PM MST Mon Feb 19 2018

...Bitter Cold Temperatures in Place for the Next Couple of
Days...

Behind the exiting Arctic cold front and clearing skies, temperatures
will fall rapidly. Much of the region will range from 5 to 25
below zero by around or just after sunrise. Yellowstone National
Park in addition to many other mountain locations will see low
temperatures dropping to as low as 30 below zero. The lowest
temperatures will occur in places where the skies clear
completely. High temperatures tomorrow will only rise into the
single digits to lower teens. Wednesday morning lows will be
equally cold across the region...even colder in some Basin
locations. Although winds themselves will be relatively quiet,
wind chill temperatures this morning through Wednesday morning may
drop as low as 25 to 40 below zero at times.

$$


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