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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Riverton WY
426 PM MST Sun Dec 17 2017

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-
426 PM MST Sun Dec 17 2017


This Hazardous Weather Outlook is for Western and Central

.DAY ONE...Tonight.

West winds of 35 to 50 mph with gusts of 60 to 70 mph are
expected along the Cody Foothills tonight through early Monday
morning. Please see the High Wind Warning for more information.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Tuesday Night into Wednesday morning...Strong wind possible
across the Cody Foothills and southern wind corridor from Jeffrey
City to Casper.

Wednesday through Thursday morning...Another storm system will
spread snow and much colder air southeast across the area.

Friday and Saturday...An arctic cold front and storm system will
spread snow and bitter cold air across the area.


Spotters in the Cody Foothills, please report any wind damage or
wind gusts of 58 mph or higher. Thank you.


Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1102 AM MST Sun Dec 17 2017

Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1102 AM MST Sun Dec 17 2017

This hazardous weather outlook is for northeast and north central

.DAY ONE...Today and Tonight

Expect gradual clearing skies this afternoon across the northeast
plains with cool temperatures only in the 40s. Skies will mostly
sunny in the mountains.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Dry and warm weather is expected through Wednesday. A cold
airmass will move in Wednesday night associated with the next
winter storm. There will be a chance of snow over the forecast
area Thursday and again on Saturday and Sunday. Temperatures will
be below seasonal normals Thursday through Sunday. There is a
chance that readings will be well below normal Sunday into the
next week.


Spotter activation will not be needed today or tonight.


Hazardous Weather Outlook...CORRECTED
National Weather Service Cheyenne WY
1035 AM MST Sun Dec 17 2017

Central Laramie Range and Southwest Platte County-
North Snowy Range Foothills-
1035 AM MST Sun Dec 17 2017

This hazardous weather outlook is for portions of south central
Wyoming and southeast Wyoming.


Strong west winds with gusts of 50 to 60 mph may develop late
tonight, impacting travel for lightweight and high profile
vehicles along Interstate 25 between Chugwater and Wheatland,
and Interstate 80 through Arlington and Elk Mountain.


Strong west winds with gusts of 50 to 60 mph may continue through
late Monday afternoon.

A strong cold front will sweep across the region Wednesday night
and Thursday. This front will be accompanied by widespread
accumulating snowfall and much colder temperatures, with morning
lows in the single digits below zero possible Friday. Those with
early holiday travel plans from mid to late this week should
continue to monitor the latest weather forecasts as details on
this storm become more clear.

.Spotter information statement...

Spotter activation will not be required.


Hazardous Weather Outlook
National Weather Service Salt Lake City UT
546 AM MST Sun Dec 17 2017

Cache Valley/Utah Portion-Northern Wasatch Front-
Salt Lake and Tooele Valleys-Southern Wasatch Front-
Great Salt Lake Desert and Mountains-Wasatch Mountain Valleys-
Wasatch Mountains I-80 North-Wasatch Mountains South of I-80-
Western Uinta Mountains-Wasatch Plateau/Book Cliffs-
Western Uinta Basin-Castle Country-San Rafael Swell-
Sanpete/Sevier Valleys-West Central Utah-Southwest Utah-
Utahs Dixie and Zion National Park-South Central Utah-
Glen Canyon Recreation Area/Lake Powell-Central Mountains-
Southern Mountains-Southwest Wyoming-
546 AM MST Sun Dec 17 2017

This Hazardous Weather Outlook is for the western two thirds of
Utah and southwest Wyoming.

.DAY ONE...Today and Tonight

Lingering light snow across southwest and central Utah and over
extreme southwest Wyoming will end this morning. Little additional
accumulation is expected.

Local gusty winds will continue until early this afternoon
through the gaps across portions of Washington County, including
along I-15 north of Washington.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

The next storm to impact the outlook area will arrive on
Wednesday. This storm has the potential to generate widespread
accumulating snow and bring very cold temperatures for Wednesday
and Thursday. Precipitation will end by Friday, though cold
temperatures will linger across the entire outlook area heading
into the weekend.


Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.


For more information from NOAA/s National Weather Service visit...

For information on potential road travel impacts visit...

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
Page last modified: June 2, 2009
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