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Winter Storm Warning


URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
226 PM MST SAT DEC 20 2014

MTZ067-212130-
/O.CON.KBYZ.WS.W.0015.141221T0100Z-141222T1900Z/
ABSAROKA/BEARTOOTH MOUNTAINS-
INCLUDING THE LOCATIONS OF...COOKE CITY
226 PM MST SAT DEC 20 2014

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO NOON MST MONDAY...

A WINTER STORM WARNING FOR HEAVY SNOW REMAINS IN EFFECT FROM 6 PM
THIS EVENING TO NOON MST MONDAY.

* TIMING...SNOW WILL DEVELOP BY THIS EVENING. PERIODS OF HEAVY
  SNOWFALL WILL IMPACT THE WEST AND NORTHWEST FACING SLOPES OF THE
  BEARTOOTH AND ABSAROKA MOUNTAINS TONIGHT INTO MONDAY MORNING.
  THE HEAVIEST SNOWFALL IS EXPECTED LATE TONIGHT AND SUNDAY.

* IMPACTS...RECREATION IN THE HIGH COUNTRY WILL BE IMPACTED BY
  ACCUMULATING SNOWFALL AND GUSTY WINDS. AVALANCHE DANGER MAY
  ALSO INCREASE DUE TO THE HEAVY SNOWFALL.

* SNOW ACCUMULATION...12 TO 20 INCHES.

* WINDS...GUSTS TO 50 MPH ON THE EXPOSED SLOPES AND RIDGES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE.

&&

$$

HTTP://WEATHER.GOV/BILLINGS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
207 PM MST SAT DEC 20 2014

...WINTER STORM ACROSS WESTERN WYOMING THIS WEEKEND...

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

WYZ012-013-211000-
/O.UPG.KRIW.WS.A.0014.141221T0300Z-141222T1500Z/
/O.NEW.KRIW.WS.W.0017.141221T0000Z-141222T1500Z/
TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE-
INCLUDING THE CITY OF...JACKSON
207 PM MST SAT DEC 20 2014

...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO
8 AM MST MONDAY...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER
STORM WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 5
PM THIS AFTERNOON TO 8 AM MST MONDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.

* SUMMARY AND TIMING...SNOWFALL WILL INCREASE ACROSS TETON COUNTY
  THIS EVENING...WITH PERIODS OF HEAVY SNOW AND BLOWING SNOW ON
  SUNDAY ACROSS THE AREA BEFORE WEAKENING ON MONDAY MORNING.

* SNOW ACCUMULATIONS...THE VALLEY LOCATIONS MAY SEE 6 TO 10 INCHES
  OF SNOWFALL WITH THIS SYSTEM WITH THE HIGHER ACCUMULATIONS
  EXPECTED ACROSS THE NORTHERN PORTION OF JACKSON HOLE. MOUNTAIN
  LOCATIONS COULD SEE 15 TO 25 INCHES... WITH LOCALLY HIGHER
  AMOUNTS.

* WIND AND VISIBILITY...WIND WILL BE STRONGEST OVER THE MOUNTAIN
  PASSES WITH WEST WIND OF 25 TO 35 MPH WITH GUSTS OVER 45 MPH.
  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 A QUARTER MILE AT
  TIMES.

* IMPACTS...THE COMBINATION OF SNOWFALL AND WIND OVER THE HIGHER
  ELEVATIONS WILL 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...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

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
207 PM MST SAT DEC 20 2014

...WINTER STORM ACROSS WESTERN WYOMING THIS WEEKEND...

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

WYZ002-211000-
/O.UPG.KRIW.WS.A.0014.141221T0600Z-141222T1800Z/
/O.NEW.KRIW.WS.W.0017.141221T0600Z-141222T1800Z/
ABSAROKA MOUNTAINS-
207 PM MST SAT DEC 20 2014

...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO
11 AM MST MONDAY...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER
STORM WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 11
PM THIS EVENING TO 11 AM MST MONDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.

* SUMMARY AND TIMING...SNOWFALL WILL INCREASE OVER THE ABSAROKA
  MOUNTAINS LATE THIS EVENING. HEAVY SNOW IS EXPECTED ON SUNDAY
  ACROSS THE AREA BEFORE WEAKENING ON MONDAY MORNING.

* SNOW ACCUMULATIONS...THE FOOTHILLS MAY RECEIVE 5 TO 8 INCHES OF
  SNOWFALL. THE HIGHEST ACCUMULATIONS ARE EXPECTED ALONG THE
  BORDER OF YELLOWSTONE NATIONAL PARK.  10 TO 20 INCHES OF
  SNOWFALL IS EXPECTED...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 A QUARTER 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...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

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
207 PM MST SAT DEC 20 2014

...WINTER STORM ACROSS WESTERN WYOMING THIS WEEKEND...

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

WYZ001-211000-
/O.UPG.KRIW.WS.A.0014.141221T0300Z-141222T1500Z/
/O.NEW.KRIW.WS.W.0017.141221T0000Z-141222T1500Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
207 PM MST SAT DEC 20 2014

...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO
8 AM MST MONDAY...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER
STORM WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 5
PM THIS AFTERNOON TO 8 AM MST MONDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.

* SUMMARY AND TIMING...SNOWFALL WILL INCREASE THIS EVENING...AND
  MAY BE HEAVY AT TIMES BEFORE WEAKENING ON MONDAY MORNING.

* SNOW ACCUMULATIONS...THE VALLEY LOCATIONS MAY SEE 6 TO 10 INCHES
  OF SNOWFALL WITH THIS SYSTEM WITH THE HIGHER ACCUMULATIONS
  EXPECTED ACROSS THE SOUTH NEAR THE SOUTHERN ENTRANCE. MOUNTAIN
  LOCATIONS COULD SEE 12 TO 24 INCHES... WITH LOCALLY HIGHER
  AMOUNTS.

* WIND AND VISIBILITY...WIND WILL BE STRONGEST OVER THE MOUNTAIN
  PASSES WITH WEST WIND OF 25 TO 35 MPH WITH GUSTS OVER 45 MPH.
  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 A QUARTER 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...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

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 POCATELLO ID
1125 AM MST SAT DEC 20 2014

.ABUNDANT PACIFIC MOISTURE WILL MOVE INTO SOUTHEAST IDAHO TODAY
AND HEAVY SNOW IS EXPECTED AT HIGH ELEVATIONS IN THE CENTRAL
MOUNTAINS AND EASTERN HIGHLANDS. HIGHEST SNOW AMOUNTS ARE
EXPECTED TO BE ABOVE 7000 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 7000 FEET. ANYONE TRAVELING IN THE SOUTHEAST IDAHO
MOUNTAINS SATURDAY EVENING THROUGH SUNDAY NIGHT CAN EXPECT
DIFFICULT DRIVING CONDITIONS ESPECIALLY OVER PASSES.

IDZ018-211100-
/O.CON.KPIH.WS.W.0010.141221T0000Z-141222T1200Z/
SAWTOOTH MOUNTAINS-
INCLUDING THE LOCATIONS OF...STANLEY...CLAYTON...COPPER BASIN...
BANNER CREEK SUMMIT
1125 AM MST SAT DEC 20 2014

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 AM MST MONDAY...

A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW REMAINS IN
EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM MST MONDAY.

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

* MAIN IMPACT...6 TO 12 INCHES OF SNOW WITH OVER A FOOT
  POSSIBLE ABOVE 7000 FEET.

* LOCATIONS INCLUDE...STANLEY...CLAYTON...BANNER CREEK SUMMIT

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
1125 AM MST SAT DEC 20 2014

.ABUNDANT PACIFIC MOISTURE WILL MOVE INTO SOUTHEAST IDAHO TODAY
AND HEAVY SNOW IS EXPECTED AT HIGH ELEVATIONS IN THE CENTRAL
MOUNTAINS AND EASTERN HIGHLANDS. HIGHEST SNOW AMOUNTS ARE
EXPECTED TO BE ABOVE 7000 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 7000 FEET. ANYONE TRAVELING IN THE SOUTHEAST IDAHO
MOUNTAINS SATURDAY EVENING THROUGH SUNDAY NIGHT CAN EXPECT
DIFFICULT DRIVING CONDITIONS ESPECIALLY OVER PASSES.

IDZ019-023-025-211100-
/O.UPG.KPIH.WS.A.0009.141221T0000Z-141222T1200Z/
/O.EXA.KPIH.WS.W.0010.141221T0000Z-141222T1200Z/
UPPER SNAKE HIGHLANDS-CARIBOU HIGHLANDS-
WASATCH MOUNTAINS/IDAHO PORTION-
1125 AM MST SAT DEC 20 2014

...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO
5 AM MST MONDAY ABOVE 7500 FEET...

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A WINTER
STORM WARNING ABOVE 7500 FEET FOR HEAVY SNOW AND BLOWING SNOW
...WHICH IS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM MST
MONDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

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

* MAIN IMPACT...6 TO 10 INCHES OF SNOW ABOVE 6000 FEET WITH AROUND
  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.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

&&

$$

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
1125 AM MST SAT DEC 20 2014

.ABUNDANT PACIFIC MOISTURE WILL MOVE INTO SOUTHEAST IDAHO TODAY
AND HEAVY SNOW IS EXPECTED AT HIGH ELEVATIONS IN THE CENTRAL
MOUNTAINS AND EASTERN HIGHLANDS. HIGHEST SNOW AMOUNTS ARE
EXPECTED TO BE ABOVE 7000 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 7000 FEET. ANYONE TRAVELING IN THE SOUTHEAST IDAHO
MOUNTAINS SATURDAY EVENING THROUGH SUNDAY NIGHT CAN EXPECT
DIFFICULT DRIVING CONDITIONS ESPECIALLY OVER PASSES.

IDZ031-032-211100-
/O.CON.KPIH.WS.W.0010.141221T0000Z-141222T1200Z/
BIG AND LITTLE WOOD RIVER REGION-LOST RIVER/PAHSIMEROI-
INCLUDING THE LOCATIONS OF...SUN VALLEY...GALENA SUMMIT...
SMILEY CREEK LODGE...ARCO...WILLOW CREEK SUMMIT
1125 AM MST SAT DEC 20 2014

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 AM MST MONDAY ABOVE 6000 FEET...

A WINTER STORM WARNING ABOVE 6000 FEET FOR HEAVY SNOW AND BLOWING
SNOW REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM MST
MONDAY.

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

* MAIN IMPACT...6 TO 10 INCHES OF SNOW ABOVE 6000 FEET WITH
  AROUND A FOOT POSSIBLE ABOVE 7000 FEET.

* LOCATIONS INCLUDE...GALENA SUMMIT...SMILEY CREEK LODGE...
  WILLOWCREEK SUMMIT.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

HTTP://WEATHER.GOV/POCATELLO

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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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