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Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Cheyenne WY
407 AM MST Tue Dec 18 2018

NEZ019-020-054-055-WYZ101-104>108-110-115>119-191115-
Scotts Bluff-Banner-Kimball-Cheyenne-
Converse County Lower Elevations-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-North Snowy Range Foothills-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
407 AM MST Tue Dec 18 2018

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

.DAY ONE AND TWO...TODAY THROUGH WEDNESDAY NIGHT

Wind and wind gusts increase late today and Wednesday. High Wind
Warnings have been issued for much of the area. Widespread
hazardous weather is not expected otherwise.

.DAYS THREE THROUGH SEVEN...THURSDAY THROUGH MONDAY

The probability for widespread hazardous weather is low.

.Spotter information statement...

Spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1059 AM MST Tue Dec 18 2018

COZ030>051-191800-
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
County-
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
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1059 AM MST Tue Dec 18 2018

...HIGH WIND WARNING NORTHEAST COLORADO WEDNESDAY...
...WINTER WEATHER ADVISORY NORTH CENTRAL MOUNTAINS TONIGHT AND
WEDNESDAY...

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

Snow and strong gusty winds will develop tonight in the high
country with a powerful jet stream moving over the area. Snowfall
will light across the mountain valleys and will be moderate across
the high mountain passes and west facing slopes. Totals by
Wednesday morning will range from 2 to 5 inches, with lighter
amounts on the valley floors. Gusty northwest winds of 50 to 70
mph may also produce areas of blowing snow over higher elevations
late tonight, creating hazardous travel conditions. East of the
mountains, dry and mild weather will persist through tonight.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Snow and windy conditions will continue over the mountain passes
Wednesday morning before decreasing in the afternoon. Up to 3
inches of additional snow can be expected. On the plains, strong
and gusty northwest winds are expected to develop Wednesday
morning and last through much of the day. The strongest winds
should stay east of the Interstate 25 corridor where gusts of 45
to 60 MPH may produce areas of blowing dust. The northern Front
Range foothills could also experience similar winds. Drivers of
lightweight and high profile vehicles will be especially
vulnerable to the strong, gusty winds.

Winds will diminish Wednesday evening, then dry and warmer
weather are expected for the end of the week. Over the weekend,
the mountains could see a little bit of snow while the plains
remain dry with temperatures around normal.

...SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$

Hazardous Weather Outlook
National Weather Service Grand Junction CO
353 AM MST Tue Dec 18 2018

COZ001>014-017>023-UTZ022>025-027>029-191100-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-
Upper Gunnison River Valley-Uncompahgre Plateau and Dallas Divide-
Northwest San Juan Mountains-Southwest San Juan Mountains-
Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
353 AM MST Tue Dec 18 2018

This hazardous weather outlook is for eastern Utah and western
Colorado.

.DAY ONE...Today and Tonight

Favorable northwest flow will bring some snow to the Elkheads,
Park and Gore Ranges possibly reaching the Flat Tops and Vail
Pass late tonight.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

The snow continues for the northern and central Colorado
mountains through Wednesday with the heaviest rates occurring in
the morning. Wind gusts of 30 to 50 mph mainly above 10,000 feet
increases the potential for blowing and drifting snow during the
day. Reduced visibilities and snow covered roads will be possible
on Rabbit Ears and Vail passes on Wednesday. Snow chances return
to the area this weekend.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service Riverton WY
224 AM MST Tue Dec 18 2018

WYZ001>020-022>030-191215-
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-
224 AM MST Tue Dec 18 2018

...High Wind Warning for the Cody Foothills late today into early
Wednesday...

...High Wind Watch for some areas East of the Divide Wednesday...

...Winter Weather Advisory for western Wyoming late today through
noon Wednesday...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight

Light snow continuing in the west today. Moderate to possibly
heavy snow will occur tonight in the western mountains. Please
see Winter Weather Products for details.

High winds are likely late tonight and tonight in the Cody
Foothills. Please see High Wind Warning for details.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Wednesday...Strong winds possible in northern Johnson County, the
Wind River Basin and Sweetwater County. Please see High Wind
Products for details. Snow continuing in the west, decreasing in
the afternoon.

Friday and Friday night...A chance of snow for the mountains and
the far west valleys.

Sunday...A chance of snow in the western mountains.

.SPOTTER INFORMATION STATEMENT...

Spotters are urged to report snowfall amounts and wind gusts over
50 mph.

$$

TEAM RIVERTON

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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