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Winter Storm Watch


URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
256 AM MST FRI DEC 19 2014

...SIGNIFICANT SNOWFALL POSSIBLE THIS WEEKEND...

.A MOIST PACIFIC SYSTEM WILL MOVE THROUGH THE INTERMOUNTAIN WEST
THIS WEEKEND...SPREADING SNOWFALL ACROSS THE WESTERN MOUNTAINS AND
VALLEYS. SNOWFALL MAY BE HEAVY AT TIMES...ESPECIALLY SUNDAY
AFTERNOON AND EVENING. THIS SYSTEM MAY BRING SIGNIFICANT SNOWFALL
ACCUMULATIONS ACROSS THE WESTERN MOUNTAINS AND VALLEYS BEFORE
WEAKENING MONDAY MORNING.

WYZ001-012-013-023-024-200000-
/O.NEW.KRIW.WS.A.0014.141221T0300Z-141222T1500Z/
YELLOWSTONE NATIONAL PARK-TETON AND GROS VENTRE MOUNTAINS-
JACKSON HOLE-STAR VALLEY-SALT RIVER AND WYOMING RANGES-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL...
JACKSON...AFTON...ALPINE...STAR VALLEY RANCH...THAYNE
256 AM MST FRI DEC 19 2014

...WINTER STORM WATCH IN EFFECT FROM SATURDAY EVENING THROUGH
MONDAY MORNING...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM SATURDAY EVENING THROUGH
MONDAY MORNING.

* SUMMARY AND TIMING...SNOWFALL WILL MOVE INTO WESTERN WYOMING
  SATURDAY EVENING...AND MAY BECOME HEAVY ON SUNDAY ACROSS THE
  AREA BEFORE WEAKENING ON MONDAY MORNING.

* SNOW ACCUMULATIONS...THE VALLEY LOCATIONS MAY SEE 5 TO 10 INCHES
  OF SNOWFALL WITH THIS SYSTEM WITH THE HIGHER ACCUMULATIONS
  EXPECTED ACROSS THE NORTHERN PORTION OF THE JACKSON VALLEY.
  MOUNTAIN LOCATIONS COULD SEE 12 TO 16 INCHES...WITH LOCALLY
  HIGHER AMOUNTS TO 24 INCHES.

* WIND AND VISIBILITY...WIND WILL BE STRONGEST OVER THE HIGHER
  ELEVATIONS...AND MAY IMPACT MOUNTAIN PASSES WITH WEST WIND OF 25
  TO 35 MPH WITH GUSTS OVER 50 MPH. EVEN THE LOWER ELEVATIONS WILL
  SEE SOUTHWEST WIND INCREASING TO 15 TO 25 MPH ON SUNDAY WITH
  GUSTS TO 35 MPH IN OPEN AREAS. THE WIND AND SNOWFALL WILL LIMIT
  THE VISIBILITY TO UNDER ONE HALF MILE AT TIMES.

* IMPACTS...THE COMBINATION OF SNOWFALL AND WIND OVER THE HIGHER
  ELEVATIONS WOULD HAVE AN ADVERSE IMPACT ON TRAVELERS ACROSS THE
  AREA. SIGNIFICANT SNOWFALL ACROSS THE VALLEYS WILL CREATE
  HAZARDOUS DRIVING CONDITIONS DUE TO SNOW PACKED ROADWAYS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A WINTER STORM WATCH MEANS CONDITIONS ARE FAVORABLE
FOR HAZARDOUS WINTER WEATHER IN AND CLOSE TO THE WATCH AREA.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
256 AM MST FRI DEC 19 2014

...SIGNIFICANT SNOWFALL POSSIBLE THIS WEEKEND...

.A MOIST PACIFIC SYSTEM WILL MOVE THROUGH THE INTERMOUNTAIN WEST
THIS WEEKEND...SPREADING SNOWFALL ACROSS THE WESTERN MOUNTAINS AND
VALLEYS. SNOWFALL MAY BE HEAVY AT TIMES...ESPECIALLY SUNDAY
AFTERNOON AND EVENING. THIS SYSTEM MAY BRING SIGNIFICANT SNOWFALL
ACCUMULATIONS ACROSS THE WESTERN MOUNTAINS AND VALLEYS BEFORE
WEAKENING MONDAY MORNING.

WYZ002-014-015-025-200000-
/O.NEW.KRIW.WS.A.0014.141221T0600Z-141222T1800Z/
ABSAROKA MOUNTAINS-WIND RIVER MOUNTAINS WEST-
WIND RIVER MOUNTAINS EAST-UPPER GREEN RIVER BASIN FOOTHILLS-
INCLUDING THE CITY OF...PINEDALE
256 AM MST FRI DEC 19 2014

...WINTER STORM WATCH IN EFFECT FROM SATURDAY EVENING THROUGH
MONDAY MORNING...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM SATURDAY EVENING THROUGH
MONDAY MORNING.

* SUMMARY AND TIMING...SNOWFALL WILL MOVE OVER THE CENTRAL
  MOUNTAINS LATE SATURDAY EVENING...AND MAY BECOME HEAVY ON
  SUNDAY ACROSS THE AREA BEFORE WEAKENING ON MONDAY MORNING.

* SNOW ACCUMULATIONS...THE FOOTHILLS MAY RECEIVE 5 TO 8 INCHES OF
  SNOWFALL...WITH THE HIGHEST ACCUMULATIONS ANTICIPATED NORTHWEST
  OF PINEDALE. THE HIGHER ELEVATIONS MAY SEE 10 TO 14 INCHES OF
  SNOWFALL...WITH LOCALLY HIGHER AMOUNTS POSSIBLE.

* WIND AND VISIBILITY...WEST WIND OF 25 TO 35 MPH WILL IMPACT THE
  MOUNTAINOUS AREAS WITH GUSTS TO 45 MPH IN OPEN AREAS WHILE THE
  LOWER ELEVATIONS SEE NORTHWEST WIND INCREASING TO 15 TO 25 MPH
  ON SUNDAY WITH SOME STRONGER GUSTS. THE WIND AND SNOWFALL WILL LIMIT
  THE VISIBILITY TO UNDER ONE HALF MILE AT TIMES.

* IMPACTS...AREAS POTENTIALLY EXPERIENCING THE COMBINATION OF
  GUSTY WIND WITH SNOWFALL MAY HAVE LIMITED VISIBILITY ON
  IMPACTED ROADWAYS. ADDITIONAL SIGNIFICANT SNOWFALL MAY CREATE
  HAZARDOUS TRAVEL WITH SNOW-PACKED ROADWAYS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A WINTER STORM WATCH MEANS CONDITIONS ARE FAVORABLE
FOR HAZARDOUS WINTER WEATHER IN AND CLOSE TO THE WATCH AREA.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

TEAM RIVERTON

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
453 AM MST FRI DEC 19 2014

.ABUNDANT PACIFIC MOISTURE WILL MOVE INTO SOUTHEAST IDAHO SATURDAY
AND HEAVY SNOW IS EXPECTED AT HIGH ELEVATIONS IN THE CENTRAL
MOUNTAINS AND EASTERN HIGHLANDS. HIGHEST SNOW AMOUNTS ARE EXPECTED
TO BE ABOVE 7500 FEET AS THIS WILL BE A WARM SYSTEM. 2 TO 6 INCHES
ARE EXPECTED AT 5 TO 6 THOUSAND FEET WITH OVER 6 INCHES POSSIBLE
ABOVE 6 THOUSAND FEET AND OVER A FOOT MAY FALL ABOVE 7500 FEET.
ANYONE TRAVELING IN THE SOUTHEAST IDAHO MOUNTAINS SATURDAY EVENING
THROUGH SUNDAY NIGHT CAN EXPECT DIFFICULT DRIVING CONDITIONS
ESPECIALLY OVER PASSES.

IDZ019-023-025-031-032-192200-
/O.NEW.KPIH.WS.A.0009.141221T0000Z-141222T1200Z/
UPPER SNAKE HIGHLANDS-CARIBOU HIGHLANDS-
WASATCH MOUNTAINS/IDAHO PORTION-BIG AND LITTLE WOOD RIVER REGION-
LOST RIVER/PAHSIMEROI-
INCLUDING THE LOCATIONS OF...DRIGGS...ISLAND PARK...EDIE RANCH...
MONIDA PASS...ASHTON HILL...TARGHEE PASS...PINE CREEK PASS...
FISH CREEK SUMMIT...GRAYS LAKE NWR...GEORGETOWN...PARIS...
GEORGETOWN SUMMIT...SUN VALLEY...GALENA SUMMIT...
SMILEY CREEK LODGE...ARCO...WILLOW CREEK SUMMIT
453 AM MST FRI DEC 19 2014

...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SUNDAY NIGHT ABOVE 6000 FEET...

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A WINTER
STORM WATCH ABOVE 6000 FEET...WHICH IS IN EFFECT FROM SATURDAY
AFTERNOON THROUGH LATE SUNDAY NIGHT.

* TIMING...5 PM SATURDAY THROUGH 5 AM MONDAY.

* MAIN IMPACT...6 TO 12 INCHES OF SNOW ABOVE 6000 FEET WITH OVER A
  FOOT POSSIBLE ABOVE 7500 FEET.

* LOCATIONS INCLUDE...DRIGGS...ISLAND PARK...MONIDA PASS...ASHTON
  HILL...TARGHEE PASS...PINE CREEK PASS...FISH CREEK
  SUMMIT...GEORGETOWN SUMMIT..GALENA SUMMIT...SMILEY CREEK
  LODGE...WILLOW CREEK SUMMIT.

* OTHER IMPACTS...BLOWING AND DRIFTING SNOW WITH LOW VISIBILITIES
  POSSIBLE ON SUNDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

HTTP://WEATHER.GOV/POCATELLO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
423 AM MST FRI DEC 19 2014

...HEAVY SNOW POSSIBLE FOR THE NORTHERN MOUNTAINS FOR THE LATTER
HALF OF THE UPCOMING WEEKEND...

.A VERY MOIST NORTHWEST FLOW WILL SET UP ACROSS THE NORTHERN GREAT
BASIN DURING THE LATTER HALF OF THE UPCOMING WEEKEND. SNOW WILL
BEGIN ACROSS THE NORTHERN WASATCH RANGE LATE SATURDAY NIGHT...THEN
SPREAD SOUTH AND EAST ACROSS THE REMAINDER OF THE NORTHERN
MOUNTAINS BY EARLY SUNDAY. THIS STORM WILL PRODUCE PERIODS OF
HEAVY SNOW AND STRONG RIDGELINE WINDS THROUGH EARLY MONDAY. SNOW
WILL GRADUALLY DIMINISH MONDAY AFTERNOON...THEN END MOST AREAS
MONDAY EVENING.

UTZ007>010-191900-
/O.NEW.KSLC.WS.A.0005.141221T0900Z-141223T0100Z/
WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80-
WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS-
INCLUDING THE CITIES OF...WOODRUFF...RANDOLPH...ALTA...BRIGHTON...
MIRROR LAKE HIGHWAY...SCOFIELD
423 AM MST FRI DEC 19 2014

...WINTER STORM WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH
MONDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
WINTER STORM WATCH...WHICH IS IN EFFECT FROM LATE SATURDAY NIGHT
THROUGH MONDAY AFTERNOON.

* AFFECTED AREA...THE WASATCH AND WESTERN UINTA MOUNTAIN RANGES
  AND THE WASATCH PLATEAU AND BOOK CLIFFS.

* SNOW ACCUMULATIONS...ACCUMULATIONS OF 10 TO 20 INCHES...WITH
  LOCALLY GREATER AMOUNTS ACROSS THE WASATCH RANGE.

* TIMING...SNOW WILL REACH THE NORTHERN WASATCH MOUNTAINS LATE
  SATURDAY NIGHT...THEN SPREAD SOUTH AND EAST ACROSS THE REMAINDER
  OF THE NORTHERN MOUNTAINS BY EARLY SUNDAY. SNOW WILL CONTINUE
  HEAVY AT TIMES THROUGH EARLY MONDAY...THEN GRADUALLY DECREASE IN
  INTENSITY AND AREAL COVERAGE MONDAY AFTERNOON.

* SNOW LEVELS...SNOW LEVELS AT THE BEGINNING OF THE STORM WILL BE
  NEAR 6000 FEET. SNOW LEVELS WILL RISE TO NEAR 7000 FEET DURING
  THE DAY SUNDAY.

* WINDS...STRONG NORTHWEST WINDS WILL DEVELOP ALONG RIDGELINE AND
  ACROSS EXPOSED AREAS BY LATE SUNDAY MORNING. WINDS OF 25 TO 35
  MPH WITH GUSTS IN EXCESS OF 50 MPH ARE EXPECTED.

* IMPACTS...HEAVY SNOW ALONG WITH THE POTENTIAL FOR SIGNIFICANT
  BLOWING AND DRIFTING OF SNOW WILL MAKE FOR HAZARDOUS TRAVEL
  CONDITIONS THROUGHOUT THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

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

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
329 AM MST FRI DEC 19 2014

COZ004-013-192230-
/O.NEW.KGJT.WS.A.0020.141221T0700Z-141223T0100Z/
ELKHEAD AND PARK MOUNTAINS-FLATTOPS-
INCLUDING THE CITIES OF...TOPONAS...BUFORD...TRAPPERS LAKE
329 AM MST FRI DEC 19 2014

...WINTER STORM WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH
MONDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION HAS ISSUED A
WINTER STORM WATCH...WHICH IS IN EFFECT FROM LATE SATURDAY NIGHT
THROUGH MONDAY AFTERNOON.

* TIMING...SNOW IS EXPECTED TO DEVELOP SATURDAY NIGHT AND
  INTENSIFY THROUGH SUNDAY. THE HEAVIEST SNOW SHOULD FALL SUNDAY
  AFTERNOON AND SUNDAY NIGHT.

* SNOW ACCUMULATION...10 TO 20 INCHES WITH LOCALLY HIGHER AMOUNTS
  POSSIBLE ALONG WEST AND NORTHWEST FACING SLOPES.

* WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 40 MPH.

* IMPACTS...ACCUMULATING SNOW WILL RESULT IN ICY AND SNOW PACKED
  ROADS AND HIGHWAYS...ESPECIALLY OVER THE MOUNTAIN SUMMITS. THE
  COMBINATION OF SNOW AND FOG WILL LIMIT VISIBILITY BELOW 1 MILE
  AT TIMES. AREAS OF BLOWING AND DRIFTING SNOW WILL OCCUR ABOVE
  TIMBERLINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW ACCUMULATIONS AND/OR BLOWING SNOW THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
244 AM MST FRI DEC 19 2014

...HEAVY SNOW SET TO RETURN TO THE SOUTHEAST WYOMING MOUNTAINS
LATE SATURDAY NIGHT THROUGH MONDAY...

.A VERY MOIST PACIFIC AIR MASS WILL COMBINE WITH STRONG WEST WINDS
TO SET THE STAGE FOR A PROLONGED UPSLOPE SNOW EVENT ALONG THE WEST
SLOPE OF THE SIERRA MADRE AND SNOWY RANGES. SNOW WILL BEGIN TO
FALL SATURDAY NIGHT WITH RATES INCREASING SUNDAY THROUGH MONDAY.
SNOWFALL TOTALS IN EXCESS OF 1 TO 2 FEET WILL BE POSSIBLE DURING
THIS PERIOD. THE COMBINATION OF STRONG WINDS AND HEAVY SNOW WOULD
MAKE TRAVEL DIFFICULT TO IMPOSSIBLE IN AND AROUND THE MOUNTAINS.

WYZ112-114-192300-
/O.NEW.KCYS.WS.A.0015.141221T0700Z-141223T0100Z/
SIERRA MADRE RANGE-SNOWY RANGE-
INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING
244 AM MST FRI DEC 19 2014

...WINTER STORM WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH
MONDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH
MONDAY AFTERNOON.

* TIMING...LATE SATURDAY NIGHT THROUGH MONDAY.

* TOTAL SNOW ACCUMULATIONS...UP TO 1 TO 2 FEET...WITH LOCALLY
  HIGHER AMOUNTS POSSIBLE ALONG WEST SLOPES.

* WINDS/VISIBILITY...VISIBILITIES MAY BE REDUCED TO BELOW ONE HALF
  MILE IN FALLING AND BLOWING SNOW.

* IMPACTS...TRAVEL ALONG HIGHWAY 230 BETWEEN WOODS LANDING AND THE
  STATELINE AND BETWEEN ENCAMPMENT AND THE STATELINE MAY BE
  IMPACTED BY THESE WINTRY CONDITIONS. OUTDOOR ENTHUSIASTS
  VENTURING INTO THE HIGH COUNTRY WILL WANT TO USE EXTREME CAUTION
  SUNDAY AND MONDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

HAHN

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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