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

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WWUS45 KRIW 202107
WSWRIW

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.

WYZ023-024-211000-
/O.UPG.KRIW.WS.A.0014.141221T0300Z-141222T1500Z/
/O.NEW.KRIW.WS.W.0017.141221T0000Z-141222T1500Z/
STAR VALLEY-SALT RIVER AND WYOMING RANGES-
INCLUDING THE CITIES OF...AFTON...ALPINE...STAR VALLEY RANCH...
THAYNE
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 THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.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 LINCOLN
  COUNTY THIS EVENING. 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.

&&

$$

WYZ012-013-211000-
/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.

&&

$$

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.

&&

$$

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.

&&

$$

WYZ014-015-025-211000-
/O.UPG.KRIW.WS.A.0014.141221T0600Z-141222T1800Z/
/O.NEW.KRIW.WS.W.0017.141221T0600Z-141222T1800Z/
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
UPPER GREEN RIVER BASIN FOOTHILLS-
INCLUDING THE CITY OF...PINEDALE
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 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.

&&

$$

C.BAKER





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