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

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WWUS45 KRIW 030815
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
115 AM MST SAT DEC 3 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 EVENTUALCOLD
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.

WYZ001-012-032300-
/O.CON.KRIW.WS.A.0009.161204T1200Z-161205T1900Z/
YELLOWSTONE NATIONAL PARK-TETON AND GROS VENTRE MOUNTAINS-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
115 AM MST SAT DEC 3 2016

...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY MORNING...

* TIMING...LIGHT SNOW ACROSS WESTERN AND NORTHWESTERN WYOMING
  TODAY AND TONIGHT 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.

&&

$$

WYZ013-032300-
/O.CON.KRIW.WS.A.0009.161204T1200Z-161205T1900Z/
JACKSON HOLE-
INCLUDING THE CITY OF...JACKSON
115 AM MST SAT DEC 3 2016

...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY MORNING...

* TIMING...LIGHT SNOW ACROSS WESTERN AND NORTHWESTERN WYOMING
  TODAY AND TONIGHT 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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