Winter Weather Warnings / Watches / Advisories
Issued by NWS Riverton, WY

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WWUS45 KRIW 212052
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
152 PM MST SUN DEC 21 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 WILL BE HEAVY AT TIMES...ESPECIALLY THIS
EVENING. THIS STORM WILL BRING SIGNIFICANT SNOWFALL ACCUMULATIONS
ACROSS THE WESTERN MOUNTAINS AND VALLEYS BEFORE WEAKENING MONDAY
MORNING.

WYZ023-024-221000-
/O.CON.KRIW.WS.W.0017.000000T0000Z-141222T1500Z/
STAR VALLEY-SALT RIVER AND WYOMING RANGES-
INCLUDING THE CITIES OF...AFTON...ALPINE...STAR VALLEY RANCH...
THAYNE
152 PM MST SUN DEC 21 2014

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM MST MONDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM MST MONDAY.

* SUMMARY AND TIMING...SNOWFALL WILL CONTINUE ACROSS LINCOLN
  COUNTY THROUGH MONDAY MORNING. PERIODS OF HEAVY SNOW WITH
  BLOWING SNOW IS EXPECTED ACROSS THE AREA ...ESPECIALLY OVER
  NEARBY MOUNTAIN PASSES THROUGH THE NIGHT.

* SNOW ACCUMULATIONS...THE VALLEY LOCATIONS HAVE ALREADY RECORDED
  5 TO 10 INCHES OF SNOWFALL WITH THIS STORM WITH THE HIGHER
  ACCUMULATIONS SEEN AROUND THAYNE. EXPECT AN ADDITIONAL 1 TO 3
  INCHES WITH LOCALLY HIGHER AMOUNTS UNDERNEATH SNOW BANDS.
  MOUNTAIN LOCATIONS COULD SEE 12 TO 20 INCHES OUT OF THIS STORM
  ...WITH LOCALLY HIGHER AMOUNTS UP TO 24 INCHES.

* 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 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.

&&

$$

WYZ012-013-221000-
/O.CON.KRIW.WS.W.0017.000000T0000Z-141222T1500Z/
TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE-
INCLUDING THE CITY OF...JACKSON
152 PM MST SUN DEC 21 2014

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM MST MONDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM MST MONDAY.

* SUMMARY AND TIMING...SNOWFALL WILL CONTINUE ACROSS TETON COUNTY
  THROUGH MIDNIGHT...WITH PERIODS OF HEAVY SNOW AND BLOWING SNOW ACROSS
  THE AREA BEFORE WEAKENING ON MONDAY MORNING.

* SNOW ACCUMULATIONS...2 TO 4 INCHES HAVE BEEN REPORTED SO FAR
  AROUND THE SOUTHERN END OF THE JACKSON VALLEY WITH AS MUCH AS 8
  INCHES REPORTED IN GRAND TETON NATIONAL PARK AND IN THE HIGHER
  ELEVATIONS OF JACKSON HOLE. THE VALLEY LOCATIONS MAY SEE AN
  ADDITIONAL 2 TO 4 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 OUT
  OF THIS STORM...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 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.

&&

$$

WYZ001-221000-
/O.CON.KRIW.WS.W.0017.000000T0000Z-141222T1500Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
152 PM MST SUN DEC 21 2014

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM MST MONDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM MST MONDAY.

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

* SNOW ACCUMULATIONS...UP TO 6 INCHES OF SNOW HAS BEEN REPORTED
  NEAR OLD FAITHFUL. OTHER 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 WITH
  SIGNIFICANTLY LOWER AMOUNTS EXPECTED AROUND MAMMOTH...LESS THAN
  2 INCHES. MOUNTAIN LOCATIONS COULD SEE 12 TO 24 INCHES...

* 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 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 ON ANY ROADWAYS THAT ARE STILL USED
  FOR MOTOR VEHICLE TRAFFIC.

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.

&&

$$

WYZ002-221000-
/O.CON.KRIW.WS.W.0017.000000T0000Z-141222T1800Z/
ABSAROKA MOUNTAINS-
152 PM MST SUN DEC 21 2014

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
MONDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST MONDAY.

* SUMMARY AND TIMING...HEAVY SNOW AND GUSTY WIND IS EXPECTED
  ACROSS THE AREA BEFORE WEAKENING ON MONDAY MORNING.

* SNOW ACCUMULATIONS...THE LOWER ELEVATIONS AND VALLEYS 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 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.

&&

$$

WYZ014-015-025-221000-
/O.CON.KRIW.WS.W.0017.000000T0000Z-141222T1800Z/
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
UPPER GREEN RIVER BASIN FOOTHILLS-
INCLUDING THE CITY OF...PINEDALE
152 PM MST SUN DEC 21 2014

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
MONDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST MONDAY.

* SUMMARY AND TIMING...WINDS WILL BE GUSTY AND SNOWFALL WILL BE
  HEAVY AT TIMES ACROSS THE AREA BEFORE WEAKENING ON MONDAY
  MORNING.

* SNOW ACCUMULATIONS...THE FOOTHILLS AROUND PINEDALE MAY RECEIVE
  5 TO 10 INCHES OF SNOWFALL...WITH THE HIGHER ACCUMULATIONS
  AROUND BONDURANT. THE MOUNTAINS MAY SEE 10 TO 20 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. THE LOWER
  ELEVATIONS WILL SEE NORTHWEST WIND INCREASING TO 15 TO 25 MPH 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.

&&

$$






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