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HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
503 AM MST SAT DEC 20 2014

MTZ028>042-056>058-063>068-WYZ098-099-211215-
SOUTHERN WHEATLAND-MUSSELSHELL-TREASURE-NORTHERN ROSEBUD-CUSTER-
FALLON-NORTHERN STILLWATER-YELLOWSTONE-POWDER RIVER-CARTER-
SOUTHERN BIG HORN-EASTERN CARBON-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-RED LODGE FOOTHILLS-
NORTHERN BIG HORN-SOUTHERN ROSEBUD-JUDITH GAP-PARADISE VALLEY-
LIVINGSTON AREA-BEARTOOTH FOOTHILLS-ABSAROKA/BEARTOOTH MOUNTAINS-
CRAZY MOUNTAINS-NORTHEAST BIGHORN MOUNTAINS-SHERIDAN FOOTHILLS-
503 AM MST SAT DEC 20 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MONTANA...SOUTH CENTRAL MONTANA...SOUTHEAST MONTANA AND NORTH
CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

STRONG SOUTHWEST WINDS CAN BE EXPECTED IN THE LIVINGSTON...NYE
AND BIG TIMBER AREAS TONIGHT. GUSTS TO 65 MPH ARE
POSSIBLE...CAUSING DANGEROUS CROSS WINDS FOR TRAVELERS ON
I-90...AS WELL AS AREA ROADS AROUND NYE.

PERIODS OF HEAVY SNOW WILL IMPACT THE BEARTOOTH ABSAROKA
MOUNTAINS TONIGHT. A FOOT OR MORE OF SNOWFALL IS POSSIBLE ALONG
WEST AND NORTHWEST FACING SLOPES INCLUDING THE MOUNTAINS ABOVE
COOKE CITY BY MONDAY MORNING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

STRONG SOUTHWEST WINDS CAN BE EXPECTED IN THE LIVINGSTON...NYE
AND BIG TIMBER AREAS SUNDAY INTO MONDAY MORNING. GUSTS TO 65 MPH
ARE POSSIBLE...CAUSING DANGEROUS CROSS WINDS FOR TRAVELERS ON
I-90...AS WELL AS AREA ROADS AROUND NYE.

PERIODS OF HEAVY SNOW WILL IMPACT THE BEARTOOTH ABSAROKA
MOUNTAINS SUNDAY INTO MONDAY MORNING. A FOOT OR MORE OF SNOWFALL
IS POSSIBLE ALONG WEST AND NORTHWEST FACING SLOPES INCLUDING THE
MOUNTAINS ABOVE COOKE CITY BY MONDAY MORNING.

A STORM SYSTEM MAY IMPACT THE REGION OVER THE CHRISTMAS
HOLIDAY...THOUGH THE TRACK AND STRENGTH OF THIS POTENTIAL SYSTEM
REMAINS UNCERTAIN. IT IS STILL TOO EARLY TO PIN POINT SNOW
AMOUNTS BUT PEOPLE PLANNING TO TRAVEL ANY TIME FROM WEDNESDAY
THROUGH NEXT WEEKEND SHOULD CHECK THE LATEST FORECAST BEFORE
SETTING OUT.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

$$

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
440 AM MST SAT DEC 20 2014

UTZ001>016-019>021-517-518-WYZ021-211300-
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-
440 AM MST SAT DEC 20 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF
UTAH AND SOUTHWEST WYOMING.

.DAY ONE...TODAY AND TONIGHT

A MOIST WESTERLY FLOW WILL KEEP A THREAT OF LIGHT VALLEY RAIN AND
MOUNTAIN SNOW ACROSS THE NORTHWEST OUTLOOK AREA TODAY. MOISTURE
WILL INCREASE TONIGHT WITH VALLEY RAIN AND MOUNTAIN SNOW BECOMING
MORE WIDESPREAD ACROSS THE NORTH OVERNIGHT. SIGNIFICANT SNOWFALL
IS EXPECTED ACROSS THE MOUNTAINS ABOVE ABOUT 7000 FEET. STRONG
WINDS WILL ALSO DEVELOP ACROSS THE NORTHERN MOUNTAINS AND WILL
CREATE AREAS OF BLOWING AND DRIFTING SNOW.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

VALLEY RAIN AND HIGH ELEVATION MOUNTAIN SNOW WILL CONTINUE ACROSS
THE NORTHERN OUTLOOK AREA SUNDAY THROUGH SUNDAY NIGHT. HEAVY SNOW
AND STRONG WINDS WILL CREATE HAZARDOUS TRAVEL CONDITIONS AT HIGHER
ELEVATIONS. RAIN IS EXPECTED BELOW ABOUT 7500 TO 8000 FEET
RESULTING IN A REDUCED IMPACT ACROSS THE SUMMITS OF MOST OF THE
MAJOR ROUTES THROUGH THE NORTHERN MOUNTAINS.

SNOW LEVELS WILL FALL BACK DOWN TO AROUND 5000 FEET ON MONDAY BUT
PRECIPITATION WILL BE TURNING SHOWERY AND TAPERING OFF DURING THE
DAY AS WELL.

THERE WILL BE A CHANCE OF SNOW AGAIN ACROSS PORTIONS OF THE
OUTLOOK AREA WEDNESDAY NIGHT AND CHRISTMAS DAY.


.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/ (ALL LOWER CASE)

FOR INFORMATION ON POTENTIAL ROAD TRAVEL IMPACTS VISIT...
HTTP://WWW.UDOTTRAFFIC.UTAH.GOV/ROADWEATHERFORECAST.ASPX

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
328 AM MST SAT DEC 20 2014

WYZ001>020-022>030-211200-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
328 AM MST SAT DEC 20 2014

...WINTER STORM WATCH FOR PORTIONS OF WESTERN WYOMING THIS EVENING
THROUGH MONDAY MORNING...

...HIGH WIND WATCH FOR THE CODY FOOTHILLS TONIGHT THROUGH 11 AM
SUNDAY...

...HIGH WIND WATCH SOUTHERN WYOMING SUNDAY AFTERNOON AND EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

PATCHY FOG IS POSSIBLE IN THE LOW LYING AROUND THE WIND RIVER
BASIN AND LANDER FOOTHILLS THIS MORNING...WHICH SHOULD LIFT BY THE
LATE MORNING HOURS.

STRONG WIND IS POSSIBLE ACROSS THE CODY FOOTHILLS TONIGHT...WITH
GUSTS UP TO 60 MPH POSSIBLE AROUND THE CLARK AREA. PLEASE SEE THE
HIGH WIND WATCH PRODUCT FOR ADDITIONAL DETAILS. ADDITIONALLY...
SNOWFALL ACROSS WESTERN WYOMING MAY INTENSIFY DURING THE EVENING
HOURS AND CONTINUE THROUGH THE OVERNIGHT HOURS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

SUNDAY THROUGH MONDAY...SIGNIFICANT SNOWFALL AND WIND EXPECTED IN
WESTERN WYOMING. SNOWFALL AMOUNTS OF 1 TO 2 FEET ARE POSSIBLE IN THE
WESTERN MOUNTAINS WITH THE LOWER ELEVATIONS AND VALLEYS POTENTIALLY
RECEIVING 5 TO 10 INCHES WITH LOCALLY HIGHER AMOUNTS.

VERY STRONG WINDS ARE EXPECTED ACROSS SWEETWATER COUNTY AND INTO THE
GREEN MOUNTAINS/RATTLESNAKE RANGE SUNDAY INTO MONDAY. STRONG WINDS
MAY ALSO BLOW SUNDAY NIGHT FROM DUBOIS TO RIVERTON.

WEDNESDAY NIGHT THROUGH CHRISTMAS DAY...A NEW STORM SYSTEM WILL
DEVELOP TO OUR WEST SPREADING SNOW FROM WEST TO EAST. THE POTENTIAL
FOR SIGNIFICANT SNOWFALL IS STILL A POSSIBILITY ACROSS CENTRAL
AND SOUTHWEST WYOMING ON CHRISTMAS DAY. COMPUTER MODELS HAVE
DIVERGED MORE TONIGHT SO STAY TUNED OVER THE NEXT SEVERAL DAYS ON
THIS POTENTIAL TRAVEL IMPACTING STORM.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO STRONG WINDS IN THE CODY FOOTHILLS
TONIGHT AND SNOWFALL IN THE FAR WEST. THANK YOU.

$$

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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