SIGNIFICANT PERIOD OF SNOWFALL RETURNING TO WESTERN WYOMING SUNDAY EVENING THROUGH MONDAY

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
1203 AM MST SAT JAN 21 2017

...SIGNIFICANT PERIOD OF SNOWFALL RETURNING TO WESTERN WYOMING
SUNDAY EVENING THROUGH MONDAY...

.ANOTHER STRONG MOIST PACIFIC WINTER WEATHER SYSTEM IS POISED TO
MOVE INTO WESTERN WYOMING LATER ON SUNDAY. ALONG WITH GOOD UPPER
LEVEL FORCING...THIS WILL BRING PERIODS OF HEAVY SNOW TO MUCH OF
THE MOUNTAINS...FOOTHILLS...AND VALLEYS WEST OF THE DIVIDE.


YELLOWSTONE NATIONAL PARK-TETON AND GROS VENTRE MOUNTAINS-
JACKSON HOLE-WIND RIVER MOUNTAINS WEST-STAR VALLEY-
SALT RIVER AND WYOMING RANGES-UPPER GREEN RIVER BASIN FOOTHILLS-
SOUTH LINCOLN COUNTY-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL...
JACKSON...AFTON...ALPINE...STAR VALLEY RANCH...THAYNE...
PINEDALE...KEMMERER...COKEVILLE
1203 AM MST SAT JAN 21 2017

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON
THROUGH MONDAY AFTERNOON...

* TIMING...LIGHT SNOW WILL MOVE INTO AND INCREASE IN EXTENT
  ACROSS FAR WESTERN WYOMING SUNDAY...BECOMING MODERATE TO HEAVY
  AT TIMES SUNDAY NIGHT THROUGH MONDAY MORNING BEFORE TAPERING
  OFF LATER MONDAY AFTERNOON.

* SNOW TOTALS...5 TO 10 INCHES IN THE VALLEYS. 8 TO 16 INCHES IN
  THE MOUNTAINS.

* MAIN IMPACT...ROADS AND HIGHWAYS WILL BECOME SLICK AND SNOW
  PACKED AND TRAVEL WILL BE DIFFICULT AT TIMES.

* OTHER IMPACTS...THE VISIBILITY MAY OFTEN LOWER TO BELOW ONE
  HALF MILE IN HEAVY SNOWFALL.

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.