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Winter Weather Advisory


URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
301 AM MDT Sun Sep 24 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO MIDNIGHT
MDT TONIGHT...

.A Pacific low pressure system will bring numerous snow showers
to the Snowy Range today and tonight. Periods of moderate snowfall
are expected this afternoon and evening, with the heaviest snow
accumulations above 10000 feet.

WYZ114-241715-
/O.NEW.KCYS.WW.Y.0026.170924T1800Z-170925T0600Z/
Snowy Range-
Including the cities of Centennial and Albany
301 AM MDT Sun Sep 24 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO MIDNIGHT
MDT TONIGHT...

The National Weather Service in Cheyenne has issued a Winter
Weather Advisory for snow, which is in effect from noon today to
midnight MDT tonight.

* TIMING...Light snow showers this morning will increase in
  coverage and intensity this afternoon and continue this evening.

* TOTAL SNOW ACCUMULATIONS...6 to 8 inches, with locally higher
  amounts above 10000 feet.

* WINDS/VISIBILITY...Southeast 10 to 15 mph, shifting to the
  southwest 5 to 10 mph this evening. Visibilities will be reduced
  to a half mile in moderate snow showers.

* IMPACTS...Outdoor recreationists planning travel to the Snowy
  Range should be prepared for poor visibility and snow-covered
  mountain passes this afternoon and evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means that periods of snow
will cause travel difficulties. Be prepared for snow covered roads
and limited visibilities...and use caution while driving.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
253 AM MDT Sun Sep 24 2017

WYZ098-250000-
/O.CON.KBYZ.WW.Y.0026.000000T0000Z-170925T0000Z/
Northeast Bighorn Mountains-
253 AM MDT Sun Sep 24 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...

* IMPACTS...Slick and snow covered roads including Highway 14.
  Difficult back country conditions. Damage to trees and power
  lines possible.

* TIMING...through today.

* SNOW ACCUMULATION...4 to 8 inches.

Precautionary/preparedness actions...

Be sure to carry an emergency winter survival kit in case you
become stranded in the back country.


&&

$$

http://weather.gov/billings

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
112 AM MDT Sun Sep 24 2017

...Snowfall Over the Wind River and Bighorn Mountains Through
Sunday...

.A storm system will continue to bring snow to the Wind River and
Bighorn mountains through Sunday. Snowfall will be heaviest above
7500 feet with accumulations of 5 to 10 inches possible. Below
7500 feet snow accumulation of 3 to 6 inches is expected.

WYZ008-009-241515-
/O.CON.KRIW.WW.Y.0034.000000T0000Z-170925T0000Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
112 AM MDT Sun Sep 24 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...

* TIMING...Snowfall will continue today before tapering through
  the overnight hours tonight. Additional amounts of 2 to 4
  inches expected.

* TOTAL SNOWFALL...5 to 10 inches.

* MAIN IMPACT...Snowfall will make travel more difficult over the
  mountain passes.

* OTHER IMPACTS...Campers and Hunters should be prepared for
  cold and snowy weather.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A winter weather advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
and slick roads with limited visibilities. Slow down, and allow
extra time to reach your destination. Check the latest road
conditions at wyoroad.info or by dialing 5 1 1.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
112 AM MDT Sun Sep 24 2017

...Snowfall Over the Wind River and Bighorn Mountains Through
Sunday...

.A storm system will continue to bring snow to the Wind River and
Bighorn mountains through Sunday. Snowfall will be heaviest above
7500 feet with accumulations of 5 to 10 inches possible. Below
7500 feet snow accumulation of 3 to 6 inches is expected.

WYZ014-015-241515-
/O.CON.KRIW.WW.Y.0034.000000T0000Z-170925T0000Z/
Wind River Mountains West-Wind River Mountains East-
112 AM MDT Sun Sep 24 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...

* TIMING...Snowfall will continue today before tapering through
  the overnight hours tonight. Additional amounts of 3 to 5 inches
  expected.

* TOTAL SNOWFALL...5 to 10 inches.

* MAIN IMPACT...Snowfall will make travel more difficult over the
  mountain passes.

* OTHER IMPACTS...Campers and Hunters should be prepared for
  cold and snowy weather.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A winter weather advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
and slick roads with limited visibilities. Slow down, and allow
extra time to reach your destination. Check the latest road
conditions at wyoroad.info or by dialing 5 1 1.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
854 PM MDT Sat Sep 23 2017

UTZ008-009-241200-
/O.CON.KSLC.WW.Y.0025.000000T0000Z-170925T0600Z/
Wasatch Mountains South of I-80-Western Uinta Mountains-
Including the cities of Alta, Brighton, and Mirror Lake Highway
854 PM MDT Sat Sep 23 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
SUNDAY NIGHT...

* AFFECTED AREA...The Wasatch mountains south of I-80, as well as
  the western Uinta mountains.

* SNOW ACCUMULATIONS...4-8 inches, mainly above 7000 feet.

* TIMING...Snow will continue, heavy at times, overnight through
  Sunday. Snow will gradually taper off Sunday evening.

* IMPACTS...Snow may impact travel on the higher passes and
  roads such as Wolf Creek and upper Cottonwoods. Greatest
  impacts on high elevation seasonal roadways, such as Guardsman
  Pass and the Mirror Lake Highway. Hunters and those recreating
  outdoors should be prepared for winter conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means that snow accumulations
will cause primarily travel difficulties. Be prepared for snow
covered roads. Use caution while driving.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
854 PM MDT Sat Sep 23 2017

UTZ007-241200-
/O.CON.KSLC.WW.Y.0025.000000T0000Z-170925T0600Z/
Wasatch Mountains I-80 North-
Including the cities of Woodruff and Randolph
854 PM MDT Sat Sep 23 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
SUNDAY NIGHT...

* AFFECTED AREA...The Wasatch Mountains from I-80 north.

* SNOW ACCUMULATIONS...4-8 inches, mainly above 7000 feet.

* TIMING...Snow will continue, heavy at times, overnight through
  Sunday. Snow will gradually taper off Sunday evening.

* IMPACTS...Snow may impact travel on the higher passes,
  especially high elevation seasonal roadways. Hunters and those
  recreating outdoors should be prepared for winter conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means that snow accumulations
will cause primarily travel difficulties. Be prepared for snow
covered roads. Use caution while driving.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
134 PM MDT Sat Sep 23 2017

IDZ023-025-241000-
/O.CON.KPIH.WW.Y.0027.170924T0600Z-170925T0600Z/
Caribou Highlands-Wasatch Mountains/Idaho Portion-
Including the cities of Henry, Soda Springs, Downey,
Lava Hot Springs, and Montpelier
134 PM MDT Sat Sep 23 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO MIDNIGHT MDT SUNDAY NIGHT...

* IMPACTS...Difficult winter driving and outdoor recreational
  conditions are expected to develop across the Caribou Highlands
  and Idaho portion of the Wasatch Mountains.

* TIMING...Beginning late this evening and continuing through
  Sunday night. Greatest impacts expected Sunday morning.

* SNOW ACCUMULATIONS...less than 2 inches expected in the valleys
  below 6000 ft MSL and 2 to 10 inches possible in the mountains
  above 6000 ft.

* CONFIDENCE...Timing: High. Snow levels and Impacts: Medium.

* LOCATIONS...Emigration Pass, Georgetown Summit, Border Summit,
  Geneva Summit, the Caribou Highlands, and the Idaho portion of
  the Wasatch Mountains.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A winter weather advisory for snow means that periods of snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and reduce driving
speeds. Those planning outdoor recreational activities should be
prepared for winter like conditions. Ensure your vehicle is
prepped for winter driving conditions. Travel with an emergency
supply kit.

&&

$$


Dense Fog Advisory


URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
300 AM MDT Sun Sep 24 2017

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM MDT THIS
MORNING FOR THE SOUTHERN LARAMIE RANGE AND FOOTHILLS...

WYZ116-117-241500-
/O.CON.KCYS.FG.Y.0013.000000T0000Z-170924T1500Z/
South Laramie Range-South Laramie Range Foothills-
Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker,
Federal, and Horse Creek
300 AM MDT Sun Sep 24 2017

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM MDT THIS
MORNING...

* TIMING...Areas of dense fog will persist through 9 AM this
  morning.

* VISIBILITY...Visibilities will be frequently reduced below one
  quarter mile along Interstate 80 and Happy Jack Road west of
  Cheyenne.

* IMPACTS...Travel across the Interstate 80 Summit and along Happy
  Jack Road will be adversely impacted early this morning.
  Motorists are encouraged to slow down and allow plenty of extra
  driving time.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Dense Fog Advisory means visibilities will frequently be
reduced to less than one quarter mile. If driving...slow down...
use your headlights...and leave plenty of distance ahead of you.

&&

$$


Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Riverton WY
230 AM MDT Sun Sep 24 2017

WYZ001>020-022>030-251100-
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-
230 AM MDT Sun Sep 24 2017

...Winter Weather Advisories for the Wind River Mountains and the
Bighorns through this afternoon...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight

Widespread mountain snowfall and rain in the valleys/basins today.
Light to moderate amounts of snow will continue today, before
tapering Sunday night. A rain/snow mix will occur in the lower
elevations early Sunday morning, before turning back over to rain
before noon. Accumulations less than a half inch expected across
southern portions above 6500 feet. Precipitation will wind down
tonight, with little to no accumulation expected in the lower
elevations.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report rain or snowfall amounts. Thank
you!

$$

Hazardous Weather Outlook
National Weather Service Cheyenne WY
908 PM MDT Sat Sep 23 2017

WYZ116-117-250315-
South Laramie Range-South Laramie Range Foothills-
908 PM MDT Sat Sep 23 2017

This hazardous weather outlook is for portions of southeast
Wyoming.

.DAY ONE...TONIGHT

Dense Fog Advisory in effect for the southern Laramie Range
tonight. Visibilities will be reduced to below one quarter mile.
Motorists traveling between Cheyenne and Laramie should be
prepared to encounter this fog and adjust plans accordingly.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

The probability for widespread hazardous weather is low.

.Spotter information statement...

Spotter activation will not be required at this time.

$$

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1114 AM MDT Sat Sep 23 2017

COZ030>051-241715-
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-
1114 AM MDT Sat Sep 23 2017

...Colder and Wetter Weather on the Way for the Outlook Area...

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

.DAY ONE...Today and Tonight

Rain showers and scattered thunderstorms will linger in areas
roughly east of an Akron to Limon line for the remainder of the
day. Lightning, locally heavy rainfall and small hail will be
possible with these storms. Some areas east of this line may also
receive an inch or so of rain, but the threat of flooding is low.
Elsewhere, look for scattered showers and isolated thunderstorms
to develop early this afternoon, and then become more widespread
later in the afternoon with the snow level lowering to around
9500 feet during the evening hours. Temperatures today will be
significantly cooler, with highs on the plains managing to only
reach the upper 50s to lower 60s.

In the high country, areas above roughly 11000 feet could see
anywhere from 1 to 4 inches of wet snow accumulate by Sunday
morning, with lesser amounts possible down to 9500 feet. Impacts
on roads will be limited due to warm pavement temperatures.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

It will be cool and unsettled through early next week...with a
gradual warming trend from Tuesday through Friday. Scattered
showers will be possible on the plains through Monday with a
chance of some light snow across the mountains and foothills above
9 thousand feet. Drier conditions are expected on Tuesday...with
a few more showers expected towards the end of the work week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$
Baker/Kalina

Hazardous Weather Outlook
National Weather Service Salt Lake City UT
604 AM MDT Sat Sep 23 2017

UTZ001>016-019>021-517-518-WYZ021-241300-
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-
604 AM MDT Sat Sep 23 2017

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

.DAY ONE...Today and Tonight

Patchy fog is possible in a few valley areas across western,
northern, and central, Utah this morning.

Valley rain and mountain snow will begin to develop this
afternoon and increase overnight. Snow will be come heavy at times
tonight across the northern Wasatch mountains as well as the
mountains of central Utah, with significant accumulations mainly
above 6500 feet.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Accumulating snow is expected to continue across the higher
elevations of northern and central Utah through Sunday evening.
Significant accumulations are expected for portions of the
northern Wasatch mountains and central Utah mountains, generally
above 6500 feet. Locally significant snow is also possible for the
western Uinta and southern Wasatch Mountains and the higher
passes of southwest Wyoming.

.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
350 AM MDT Sat Sep 23 2017

COZ001>014-017>023-UTZ022>025-027>029-241000-
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-
350 AM MDT Sat Sep 23 2017

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

.DAY ONE...Today and Tonight

A passing cold front and strong jet stream overhead will produce
scattered showers and thunderstorms across western Colorado today
and this evening. Breezy conditions will continue through the
period.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Expect a return to more unsettled weather as well as a
significant cool down this weekend and next week as a cold front
treks through the region which should lead to snow levels lowering
in the mountains going into the weekend, especially further
north.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

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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