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

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WWUS45 KRIW 210931
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
231 AM 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 SUNDAY
MORNING THROUGH THE EVENING. THIS STORM WILL BRING SIGNIFICANT
SNOWFALL ACCUMULATIONS ACROSS THE WESTERN MOUNTAINS AND VALLEYS
BEFORE WEAKENING MONDAY MORNING.

WYZ023-024-212315-
/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
231 AM 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 ACROSS LINCOLN
  COUNTY THROUGH MIDNIGHT. PERIODS OF HEAVY SNOW WITH BLOWING
  SNOW IS EXPECTED SUNDAY ACROSS THE AREA BEFORE WEAKENING ON
  MONDAY MORNING.

* SNOW ACCUMULATIONS...THE VALLEY LOCATIONS MAY SEE 6 TO 10
  INCHES OF SNOWFALL WITH THIS STORM WITH THE HIGHER
  ACCUMULATIONS EXPECTED AROUND STAR VALLEY RANCH. MOUNTAIN
  LOCATIONS COULD SEE 12 TO 20 INCHES... 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.

&&

$$

WYZ012-013-212315-
/O.CON.KRIW.WS.W.0017.000000T0000Z-141222T1500Z/
TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE-
INCLUDING THE CITY OF...JACKSON
231 AM 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 ACROSS TETON
  COUNTY THROUGH MIDNIGHT...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.

&&

$$

WYZ001-212315-
/O.CON.KRIW.WS.W.0017.000000T0000Z-141222T1500Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
231 AM 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...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.

&&

$$

WYZ002-212315-
/O.CON.KRIW.WS.W.0017.000000T0000Z-141222T1800Z/
ABSAROKA MOUNTAINS-
231 AM 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...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.

&&

$$

WYZ014-015-025-212315-
/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
231 AM 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...SNOWFALL WILL MOVE OVER THE WIND RIVER
  MOUNTAINS LATE THIS EVENING...AND MAY BECOME HEAVY ON SUNDAY
  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 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.

&&

$$







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