URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
141 AM MST SUN DEC 20 2015
...SIGNIFICANT HEAVY SNOW AND BLOWING SNOW POSSIBLE FROM MONDAY
EVENING THROUGH WEDNESDAY MORNING...
.RAPIDLY INCREASING EASTERN PACIFIC MOISTURE WILL COMBINE WITH A
STRONG UPPER LEVEL JET AND LOCAL LIFT FROM THE MOUNTAINS OF
WESTERN WYOMING TO PRODUCE SIGNIFICANT SNOWFALL BEGINNING MONDAY
NIGHT...LASTING THROUGH WEDNESDAY MORNING. SOMEWHAT OF A SHORT
LULL IN SNOWFALL INTENSITY WILL OCCUR BY TUESDAY AFTERNOON...BUT
WILL BE REPLACED BY MODERATE TO HEAVY SNOW ONCE AGAIN BY TUESDAY
NIGHT. HEAVIEST SNOW FALL ACROSS THE REGION WILL OCCUR MONDAY
NIGHT AND AGAIN TUESDAY NIGHT.
WYZ013-023-202300-
/O.NEW.KRIW.WS.A.0010.151222T0300Z-151223T1900Z/
JACKSON HOLE-STAR VALLEY-
INCLUDING THE CITIES OF...JACKSON...AFTON...ALPINE...
STAR VALLEY RANCH...THAYNE
141 AM MST SUN DEC 20 2015
...WINTER STORM WATCH IN EFFECT FROM MONDAY EVENING THROUGH
WEDNESDAY MORNING...
THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM MONDAY EVENING THROUGH
WEDNESDAY MORNING.
* TIMING...WHILE THERE WILL BE PERIODS OF LIGHT SNOW ACROSS THE
REGION TODAY THROUGH THE DAY MONDAY...HEAVIER SNOWFALL IS NOT
ANTICIPATED TO BEGIN UNTIL LATER MONDAY NIGHT. THEN A LULL IN
SNOWFALL INTENSITY IS EXPECTED BY MID DAY TUESDAY...ESPECIALLY
ACROSS THE JACKSON VALLEY...WITH HEAVIER SNOWFALL RETURNING TO THE
VALLEYS ONCE AGAIN TUESDAY NIGHT...AND CONTINUING INTO WEDNESDAY
MORNING.
* SNOWFALL...STORM TOTAL SNOWFALL OF 6 TO 12 INCHES.
* WIND AND VISIBILITY...SOUTHWEST TO WEST WINDS 15 TO 20 MPH WITH
GUSTS 20 TO 30 MPH ACROSS OPEN AREAS WILL CAUSE BLOWING AND
DRIFTING SNOW WITH VISIBILITY UNDER ONE QUARTER MILE AT TIMES.
* MAIN IMPACT...TRAVEL CONDITIONS WILL BE DIFFICULT DUE TO SNOW
AND POOR VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.