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Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Cheyenne WY
429 AM MDT Wed Apr 26 2017

NEZ002-003-019>021-054-055-095-096-271030-
Dawes-Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne-
North Sioux-South Sioux-
429 AM MDT Wed Apr 26 2017

This hazardous weather outlook is for portions of western
Nebraska.

.DAY ONE...TODAY AND TONIGHT

No active weather is expected at this time.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Cooler air filtering in from the north combined with an upper
level disturbance will bring a chance for accumulating snowfall
into the far northern Panhandle Thursday night into Friday with
light snow accumulations possible elsewhere by Friday evening.
Showery pattern will continue through early next week.

.Spotter information statement...

Spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service Cheyenne WY
429 AM MDT Wed Apr 26 2017

WYZ101>119-271030-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen 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-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
429 AM MDT Wed Apr 26 2017

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

.DAY ONE...TODAY AND TONIGHT

An upper level disturbance will bring moderate snowfall
accumulations to the mountains tonight.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Mountain snow will continue into Friday. Cooler air filtering in
from the north will bring a chance for accumulating snowfall into
northern areas Thursday night into Friday with light snow
accumulations possible elsewhere by Friday evening. Showery
pattern will continue through early next week.

.Spotter information statement...

$$

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
515 AM MDT Wed Apr 26 2017

COZ030>051-271115-
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-
515 AM MDT Wed Apr 26 2017

...Winter Weather Advisory for the mountains above 9000 feet
tonight and Thursday...

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

.DAY ONE...Today and Tonight

Snow showers will increase across the mountains through this
afternoon, and then become widespread and heavier tonight. Persons
planning travel into the Colorado high country tonight should be
prepared for winter travel conditions. On the plains, isolated
rain showers can be expected this afternoon, with a low threat of
a thunderstorm. Showers may become more numerous late tonight.

Another upper level disturbance moving quickly southeast into the
region will bring the unsettled weather.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Snow will continue across the mountains Thursday morning, and then
gradually decrease by late in the afternoon or early evening.
Total snow accumulations from tonight through Thursday are
expected to range between 4 and 8 inches above 9000 feet, with
local amounts up to a foot. In the lower mountain valleys,
accumulations will mostly range between 1 and 4 inches. On the
plains, rain showers are expected to become more numerous Thursday
morning, with the highest coverage over the northeast corner of
the state.

By late Friday and Saturday, a potentially stronger storm system
is expected to drop toward the Four Corners region. Temperatures
will be turning colder with most of the precipitation from this
storm falling in the form of snow. There is still considerable
uncertainty with regard to potential snow accumulations. If
heavier snow develops, then already leafed out trees would be
vulnerable to damage. We will continue to monitor the potential
snow accumulations across northeast Colorado, so stay tuned for
the latest updates on this spring storm.

After drier and warmer conditions Sunday into Monday, the next
storm system may bring more precipitation in the form of rain and
snow by Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$

Hazardous Weather Outlook
National Weather Service GRAND JUNCTION CO
502 AM MDT Wed Apr 26 2017

COZ001>014-017>023-UTZ022>025-027>029-271115-
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-
502 AM MDT Wed Apr 26 2017

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

.DAY ONE...Today and Tonight

Scattered snow showers across the mountains will increase in
coverage and intensity tonight, especially across Colorado`s
northern and central mountains. Embedded thunderstorms could
enhance snowfall for some areas. Accumulations of 3 to 6 inches
with locally higher amounts are possible by sunrise Thursday.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

A series of disturbances will bring additional mountain snow to
the region through Saturday. In addition, unseasonably cold
temperatures are expected which may bring a hard freeze to the
lower valleys where tender vegetation has budded out Friday
morning.

.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.

$$

NL

Hazardous Weather Outlook
National Weather Service Riverton WY
227 AM MDT Wed Apr 26 2017

WYZ001>020-022>030-271200-
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-
227 AM MDT Wed Apr 26 2017

...WINTER WEATHER ADVISORY FOR MUCH OF WESTERN WYOMING THIS
AFTERNOON INTO TUESDAY...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight...

Snow will spread back into western Wyoming today and tonight.
Please see Winter Weather Products and forecasts for details.

Isolated thunderstorms are possible this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

Thursday and Friday...A slowly evolving cold storm system will
develop over the Great Basin and spread widespread cold rain or
snow across much of the area. Significant snowfall is possible
across parts of the area, especially around Central Wyoming.

.SPOTTER INFORMATION STATEMENT...

Spotters are urged to report snowfall amounts or other significant
weather.

$$

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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