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Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Riverton WY
301 AM MDT Sat Apr 29 2017

WYZ001>020-022>030-301215-
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-
301 AM MDT Sat Apr 29 2017

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight

Some roads in Central Wyoming will be slick or snow covered in
spots through this morning.

.DAYS TWO THROUGH SEVEN...Sunday through Friday...

Sunday late afternoon through Monday morning...Increasing light
snow showers across portions of western and northern Wyoming.

Monday night and Tuesday...Snow in northwest and northern
mountains could result in mountain passes becoming slick and
hazardous. A few thunderstorms could also occur Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$

Hazardous Weather Outlook
National Weather Service Cheyenne WY
356 AM MDT Sat Apr 29 2017

WYZ101>119-301000-
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-
356 AM MDT Sat Apr 29 2017

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

.DAY ONE...TODAY AND TONIGHT

Patches of light snow and areas of fog may linger near and along
Interstate 80 between Cheyenne and Laramie early this morning.
Temperatures are well below freezing and there may be patches of
ice on the road. Any lingering snow will end early this morning
and temperatures will slowly warm after sunrise.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

An upper level disturbance will bring a chance of snow shower
activity to parts of Southeast Wyoming west of the Laramie Range
on Tuesday.

.Spotter information statement...

Spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service Salt Lake City UT
608 PM MDT Fri Apr 28 2017

UTZ001>016-019>021-517-518-WYZ021-291200-
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-
608 PM MDT Fri Apr 28 2017

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

.DAY ONE...Tonight

Rain and snow showers will continue across the outlook areas into
this evening with some of these lingering into the night. The
heaviest snow showers are expected across southwest Wyoming and
adjacent portions of northern Utah including the Wasatch Back.
Occasional winter driving conditions will impact travel in these
areas tonight including along I-80 east of Salt Lake City.

Strong northerly winds gusting into the 50 mph range are expected
across Washington County tonight with the strongest winds through
north-south canyons. Winds are not expected to be strong in the
city of St George.

Another area of strong winds will develop tonight along the
northern Wasatch Front where easterly canyon winds with gusts in
50 mph range are expected. The strongest winds will occur in Davis
County.

Hard freeze conditions are forecast for the west central and
southwestern valleys as well as the Sanpete and Sevier valleys
tonight.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Gusty canyon winds along the Wasatch Front and in Washington
County will gradually decrease Saturday morning.

High pressure will bring a warming trend to the outlook area for
the weekend.

.SPOTTER INFORMATION STATEMENT...

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

$$

For more information from NOAA/s National Weather Service visit...
http://weather.gov/saltlakecity

For information on potential road travel impacts visit...
http://www.udottraffic.utah.gov/roadweatherforecast.aspx

Hazardous Weather Outlook
National Weather Service GRAND JUNCTION CO
402 PM MDT Fri Apr 28 2017

COZ001>014-017>023-UTZ022>025-027>029-292215-
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-
402 PM MDT Fri Apr 28 2017

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

.DAY ONE...Tonight

Freezing temperatures are expected tonight in the central
Gunnison, Uncompahgre and North Fork of the Gunnison Valleys.
Budding fruit and delicate vegetation are at risk of damage
again from low temperatures of 25 to 30 degrees. There is a slight
chance of freezing temperatures in the Grand Valley tonight, but
mainly in the more cold prone pockets across the area.

.DAYS TWO THROUGH SEVEN...Sunday through Thursday

There is a chance of freezing temperatures again Sunday night in
the Grand Valley, as well and the central Gunnison, Uncompahgre
and North Fork of the Gunnison valleys.

There will be slight chance of snow showers in the northern
Colorado mountains Monday and Tuesday. Dry conditions will prevail
the rest of the week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1201 PM MDT Fri Apr 28 2017

COZ030>051-291815-
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-
1201 PM MDT Fri Apr 28 2017

...AREAS OF HEAVY SNOW TONIGHT INTO SATURDAY...

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

.DAY ONE...Today and Tonight

A spring storm system bring a return of snow to much of Colorado
tonight. On the plains, rain showers and isolated thunderstorms
will develop behind a cold front this afternoon. Those showers
will change over to all snow this evening. The heaviest snow will
be from the Front Range Foothills across the southern part of the
Denver metro area and Palmer Divide. Snowfall rates of 1 to 2
inches per hour will be possible there with the heavier showers
this evening, then a steady lighter snow will continue into
Saturday morning.

The wet snow may accumulate on leafed out trees, causing broken
limbs and scattered power outages. Roads will likely become slushy
during the periods of heavier snow. The main travel impacts will
be in areas west and south of Denver overnight tonight.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Snow will continue across the forecast area on Saturday. Snow
will decrease from northwest to southeast across the forecast
area from Saturday afternoon through Sunday morning. Over the
plains snow accumulations from the storm will be 6-12 inches south
of a Boulder to Limon line, with 1-4 inch north of that line. The
foothills and the Palmer Ridge can expected 8-15 inches. The high
mountains can expect 6-12 inches east of the divide with 1-5
inches west of the divide. Skies will partially clear early
Sunday morning and low temperatures will get into the lower to
mid 20s over the plains.

Scattered Snow and rain showers with isolated thunderstorms can
be expected in the mountains Sunday through Tuesday night. The
plains will se scattered rain showers and isolated thunderstorms
Tuesday and Tuesday night. Dry condition and warmer temperatures
are expected from Wednesday onward.

.SPOTTER INFORMATION STATEMENT...

Snowfall reports from spotters will be appreciated.

$$

Gimmestad/Koop/Cooper

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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