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Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Cheyenne WY
946 PM MST Wed Feb 22 2017

NEZ002-003-019>021-054-055-095-096-WYZ101-102-107-108-117>119-
240500-
Dawes-Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne-
North Sioux-South Sioux-Converse County Lower Elevations-
Niobrara County-East Platte County-Goshen County-
South Laramie Range Foothills-Central Laramie County-
East Laramie County-
946 PM MST Wed Feb 22 2017

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

.DAY ONE...TONIGHT

Widespread accumulating snow will begin tonight and continue
through early Friday. Winter Storm Warnings are in effect for the
eastern plains of southeast Wyoming and western Nebraska for
significant snow accumulations starting late tonight. Please
refer to the Winter Storm Warning for additional details.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Widespread accumulating snow, heavy at times, will continue
Thursday and possibly into early Friday. East to northeast winds
will increase between 15 to 25 MPH with higher gusts on Thursday
resulting in drifting snow but also some areas of blowing snow at
times. The heaviest snow accumulations should be north of
Interstate 80.

.Spotter information statement...

Spotters are urged to report snow accumulations Thursday and
Friday.

$$

Hazardous Weather Outlook
National Weather Service Cheyenne WY
946 PM MST Wed Feb 22 2017

WYZ103>106-109>116-240500-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
Central Carbon County-North Snowy Range Foothills-
Southwest Carbon County-Sierra Madre Range-
Upper North Platte River Basin-Snowy Range-Laramie Valley-
South Laramie Range-
946 PM MST Wed Feb 22 2017

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

.DAY ONE...TONIGHT

Widespread accumulating snow will continue through the night, and
a Winter Storm Warning is in effect. Please refer to the Winter
Storm Warning for additional details.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Widespread accumulating snow will continue Thursday and possibly
into early Friday. Wind direction will be variable Thursday and
Thursday night since the low pressure system will be over the
area...but will gust between 20 to 30 MPH at times resulting in
drifting snow but also some areas of blowing snow at times.

.Spotter information statement...

Spotters are urged to report snow accumulations Thursday and
Friday.

$$

Hazardous Weather Outlook
National Weather Service Riverton WY
210 AM MST Thu Feb 23 2017

WYZ001>020-022>030-241300-
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-
210 AM MST Thu Feb 23 2017

...High Impact Winter Storm across Central and Southern Wyoming
and portions of north-central Wyoming Today through Friday
Morning...

...Flood Warning remains in effect for the Big Horn River roughly
between Manderson and Greybull through at least this afternoon...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight

A major winter storm with significant snow and blowing snow will
impact much of central, eastern and southern Wyoming today and
tonight. Blizzard conditions are expected across southeast
Fremont, southwest Natrona and eastern Sweetwater counties. The
blizzard conditions will impact South Pass, Highway 287 between
Lander and Muddy Gap, as well as Interstate 80 in eastern
Sweetwater County. Please see the highlights for further details.

Ice jam flooding continues across portions of the Big Horn Basin
especially along the Big Horn River in Big Horn County.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Friday...Light snow will continue across the area. Additional
accumulations will be low.

Sunday night through Monday night...Significant snow possible
across far western valleys and mountains.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report snowfall amounts. Thank you!

$$

Team Riverton

Hazardous Weather Outlook
National Weather Service Rapid City SD
239 PM MST Wed Feb 22 2017

SDZ024>026-028>032-072>074-WYZ055-058-231430-
Northern Black Hills-Northern Foot Hills-Rapid City-
Central Black Hills-Southern Black Hills-Custer Co Plains-
Pennington Co Plains-Haakon-Sturgis/Piedmont Foot Hills-
Southern Meade Co Plains-Hermosa Foot Hills-Southern Campbell-
Weston-
239 PM MST Wed Feb 22 2017

This Hazardous weather outlook is for portions of the Black Hills
of South Dakota...western South Dakota...and northeast Wyoming.

.DAY ONE...This Afternoon and Tonight

Snow will develop late tonight and continue into Thursday.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

A winter warning is in effect for the region through Friday
morning. Snow will become heavy at times on Thursday, with snow
diminishing Thursday night or Friday morning. Accumulations of
4 to 8 inches are possible. Gusty winds will create areas of
blowing snow.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

$$

Hazardous Weather Outlook
National Weather Service Rapid City SD
239 PM MST Wed Feb 22 2017

SDZ027-041>044-046-047-049-231430-
Southern Foot Hills-Fall River-Oglala Lakota-Jackson-Bennett-
Mellette-Todd-Tripp-
239 PM MST Wed Feb 22 2017 /339 PM CST Wed Feb 22 2017/

This Hazardous weather outlook is for portions of south central
South Dakota...and western South Dakota.

.DAY ONE...This Afternoon and Tonight

Snow will develop late tonight and continue through Thursday.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

A winter warning is in effect for the region through Friday
morning. Snow will become heavy on Thursday, with snow
diminishing Thursday night or Friday morning. Accumulations of 10
to 15 inches are possible. Gusty winds will create areas of
blowing and drifting snow.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

$$

Hazardous Weather Outlook
National Weather Service Rapid City SD
239 PM MST Wed Feb 22 2017

WYZ054-056-057-231430-
Northern Campbell-Western Crook-Wyoming Black Hills-
239 PM MST Wed Feb 22 2017

This Hazardous weather outlook is for portions of northeast
Wyoming...and the Black Hills of Wyoming.

.DAY ONE...This Afternoon and Tonight

Snow will develop late tonight and continue into Thursday.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

A winter storm will continue to affect the region Thursday, with
snow diminishing Thursday night or Friday morning. 2 to 5 inches
of accumulation are possible, and a Winter Weather Advisory is in
effect. Some blowing snow is also possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

$$

Hazardous Weather Outlook
National Weather Service North Platte NE
329 PM CST Wed Feb 22 2017

NEZ004>010-022>029-035>038-056>059-069>071-094-232130-
Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden-
Grant-Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson-
Logan-Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier-
Western Cherry-
329 PM CST Wed Feb 22 2017 /229 PM MST Wed Feb 22 2017/

This Hazardous Weather Outlook is for portions of western and
north central Nebraska.

.DAY ONE...TONIGHT.

A winter storm system will begin to affect the region late
tonight. Rain will change to snow across northwest Nebraska late
tonight.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

A winter storm system will continue to affect the region Thursday
into Friday. Snow will spread east on Thursday, impacting the
sandhills and north central Nebraska. At this time, the greatest
threat for accumulating snow is along and north of Interstate 80,
with heaviest accumulations expected across north central
Nebraska and the sandhills.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

&&

Get your weather, hydrological, and climate information at
http://www.weather.gov/northplatte

$$

Taylor

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
1036 AM MST Wed Feb 22 2017

COZ030>051-231745-
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-
1036 AM MST Wed Feb 22 2017

...Red Flag Warning continues for portions of Douglas...Elbert and
Lincoln counties through the afternoon due to increased fire
danger from low relative humidity and strong winds...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL
COLORADO.

.DAY ONE...TODAY AND TONIGHT

Slightly cooler air with more moisture will spread into northern
Colorado today, but areas south and southeast of Denver will still
be very warm, dry, and windy. Wind gusts of 30 to 40 mph can be
expected across Douglas and Elbert counties as well as in the
mountains. There will be scattered snow showers in the mountains
today, then increasing snow in the high country overnight with
accumulations of 3 to 6 inches by morning, mainly north of
Interstate 70.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Snow is expected in the mountains Thursday and Thursday night
with a chance of snow continuing from Friday well into next week.
For the lower elevations there will be a chance of snow Thursday
into Friday morning. Significant accumulations are not expected
with this storm. Temperatures will cool down to below seasonal
normals Thursday through Saturday, then they will warm up Sunday
and Monday.

.SPOTTER INFORMATION STATEMENT...

Reports of snowfall or strong winds will be appreciated.

$$

Hazardous Weather Outlook
National Weather Service Grand Junction CO
453 AM MST Wed Feb 22 2017

COZ001>014-017>023-UTZ022>025-027>029-231300-
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-
453 AM MST Wed Feb 22 2017

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

.DAY ONE...Today and Tonight

Gusty southwest winds up to 50 mph will encompass much of eastern
Utah and western Colorado through tonight. The exception will be
across extreme northeast Utah and northwest Colorado where a cold
front will push into the area today. Expect scattered rain and
snow showers along and north of this boundary with the rain and
snow spreading south across the remainder of the region tonight.
Snowfall accumulations up to 8 inches are expected for the
mountains north of Interstate with light amounts elsewhere.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

There is a good chance for valley rain showers and mountain snow
showers each afternoon and evening as a series of moist Pacific
storms pass through. Colder air moving in may flip the valleys
over to all snow by Thursday morning. Expect moderate to heavy
snow accumulations for the mountains with light accumulating snow
in the valleys Thursday. A brief break will arrive Friday and
Saturday, although more rain and snow arrives Sunday and will be
sticking around through Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected today or tonight, however
spotters are encouraged to report snowfall amounts to the
National Weather Service in Grand Junction.

$$

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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