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

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WWUS45 KRIW 030425
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
925 PM MST FRI DEC 2 2016

...MODERATE TO HEAVY SNOW AND BLOWING SNOW POSSIBLE FOR PORTIONS
OF YELLOWSTONE NATIONAL PARK...THE TETON MOUNTAINS...THE GROS
VENTRE MOUNTAINS...AND THE JACKSON VALLEY SUNDAY THROUGH MONDAY
MORNING...

.INCREASING PACIFIC MOISTURE IN COMBINATION WITH A STRONG UPPER
LEVEL DISTURBANCE...INCREASINGLY COLD AIR MASS...AND AN ENVENTUAL
COLD FRONT PASSAGE...WILL BRING MODERATE TO HEAVY SNOW IN
ADDITION TO GUSTY SOUTH TO SOUTHWEST WINDS TO WESTERN AND
NORTHWESTERN WYOMING SUNDAY THROUGH MONDAY MORNING.

WYZ001-012-031000-
/O.NEW.KRIW.WS.A.0009.161204T1200Z-161205T1900Z/
YELLOWSTONE NATIONAL PARK-TETON AND GROS VENTRE MOUNTAINS-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
925 PM MST FRI DEC 2 2016

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

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

* TIMING...LIGHT SNOW ACROSS WESTERN AND NORTHWESTERN WYOMING
  SATURDAY AND SATURDAY NIGHT WILL GIVE WAY TO INCREASING MODERATE
  SNOWFALL BY SUNDAY MORNING. HEAVY SNOW IS EXPECTED OVER THE
  MOUNTAINS BY SUNDAY EVENING...LASTING OVERNIGHT INTO EARLY
  MONDAY MORNING BEFORE DECREASING IN INTENSITY THROUGH THE REST
  OF THE MORNING HOURS...

* TOTAL SNOWFALL...POSSIBLE 10 TO 18 INCHES

* WIND AND VISIBILITY...SOUTHWEST WIND INCREASING TO 25 TO 35 MPH
  WITH GUSTS 40 TO 50 MPH BY SUNDAY AFTERNOON MAY CAUSE AREAS OF
  BLOWING AND DRIFTING SNOW...WITH VISIBILITY LIMITED TO ONE
  QUARTER MILE OR LESS AT TIMES.

* IMPACTS...ROADS MAY BECOME SNOW PACKED AND SLICK WITH LIMITED
  VISIBILITY AT TIMES. PEOPLE PLANNING OUTDOOR ACTIVITIES SHOULD
  BE PREPARED FOR ADVERSE WINTER WEATHER CONDITIONS AND TAKE THE
  PROPER PRECAUTIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

WYZ013-031000-
/O.NEW.KRIW.WS.A.0009.161204T1200Z-161205T1900Z/
JACKSON HOLE-
INCLUDING THE CITY OF...JACKSON
925 PM MST FRI DEC 2 2016

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

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

* TIMING...LIGHT SNOW ACROSS WESTERN AND NORTHWESTERN WYOMING
  SATURDAY AND SATURDAY NIGHT WILL GIVE WAY TO INCREASING SNOWFALL
  BY SUNDAY MORNING. MODERATE TO HEAVY SNOW IS EXPECTED OVER THE
  JACKSON VALLEY BY SUNDAY EVENING...LASTING OVERNIGHT INTO EARLY
  MONDAY MORNING BEFORE DECREASING IN INTENSITY THROUGH THE REST
  OF THE MORNING HOURS...

* TOTAL SNOWFALL...POSSIBLE 6 TO 10 INCHES

* WIND AND VISIBILITY...SOUTHWEST WIND INCREASING TO 15 TO 25 MPH
  WITH GUSTS 30 TO 40 MPH BY SUNDAY AFTERNOON MAY CAUSE AREAS OF
  BLOWING AND DRIFTING SNOW...WITH VISIBILITY LIMITED TO ONE HALF
  MILE OR LESS AT TIMES.

* IMPACTS...ROADS MAY BECOME SLICK...SLUSHY AND SNOW PACKED WITH
  LIMITED VISIBILITY AT TIMES. PEOPLE PLANNING OUTDOOR ACTIVITIES
  SHOULD BE PREPARED FOR ADVERSE WINTER WEATHER CONDITIONS AND
  TAKE THE PROPER PRECAUTIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


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