WHILE THE CURRENT FORECAST INDICATES THE GREATER SNOW WITH THIS NEXT STORM

WILL BE NORTH OF STAR VALLEY, SEVERAL INCHES ARE LIKELY IN THE STAR VALLEY 

REGION AS WELL BE MONDAY. 

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.


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.