Winter Storm Watch Issued for Star Valley this weekend.

Winter Storm Watch valid until December 22 8:00am MST

URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 256 AM MST FRI DEC 19 2014 ...SIGNIFICANT SNOWFALL POSSIBLE THIS WEEKEND... .A MOIST PACIFIC SYSTEM WILL MOVE THROUGH THE INTERMOUNTAIN WEST THIS WEEKEND...SPREADING SNOWFALL ACROSS THE WESTERN MOUNTAINS AND VALLEYS. SNOWFALL MAY BE HEAVY AT TIMES...ESPECIALLY SUNDAY AFTERNOON AND EVENING. THIS SYSTEM MAY BRING SIGNIFICANT SNOWFALL ACCUMULATIONS ACROSS THE WESTERN MOUNTAINS AND VALLEYS BEFORE WEAKENING MONDAY MORNING. WYZ001-012-013-023-024-200000- /O.NEW.KRIW.WS.A.0014.141221T0300Z-141222T1500Z/ YELLOWSTONE NATIONAL PARK-TETON AND GROS VENTRE MOUNTAINS- JACKSON HOLE-STAR VALLEY-SALT RIVER AND WYOMING RANGES- INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL... JACKSON...AFTON...ALPINE...STAR VALLEY RANCH...THAYNE 256 AM MST FRI DEC 19 2014 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY EVENING THROUGH MONDAY MORNING... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM SATURDAY EVENING THROUGH MONDAY MORNING. * SUMMARY AND TIMING...SNOWFALL WILL MOVE INTO WESTERN WYOMING SATURDAY EVENING...AND MAY BECOME HEAVY ON SUNDAY ACROSS THE AREA BEFORE WEAKENING ON MONDAY MORNING. * SNOW ACCUMULATIONS...THE VALLEY LOCATIONS MAY SEE 5 TO 10 INCHES OF SNOWFALL WITH THIS SYSTEM WITH THE HIGHER ACCUMULATIONS EXPECTED ACROSS THE NORTHERN PORTION OF THE JACKSON VALLEY. MOUNTAIN LOCATIONS COULD SEE 12 TO 16 INCHES...WITH LOCALLY HIGHER AMOUNTS TO 24 INCHES. * WIND AND VISIBILITY...WIND WILL BE STRONGEST OVER THE HIGHER ELEVATIONS...AND MAY IMPACT MOUNTAIN PASSES WITH WEST WIND OF 25 TO 35 MPH WITH GUSTS OVER 50 MPH. EVEN THE LOWER ELEVATIONS WILL SEE SOUTHWEST WIND INCREASING TO 15 TO 25 MPH ON SUNDAY WITH GUSTS TO 35 MPH IN OPEN AREAS. THE WIND AND SNOWFALL WILL LIMIT THE VISIBILITY TO UNDER ONE HALF MILE AT TIMES. * IMPACTS...THE COMBINATION OF SNOWFALL AND WIND OVER THE HIGHER ELEVATIONS WOULD HAVE AN ADVERSE IMPACT ON TRAVELERS ACROSS THE AREA. SIGNIFICANT SNOWFALL ACROSS THE VALLEYS WILL CREATE HAZARDOUS DRIVING CONDITIONS DUE TO SNOW PACKED ROADWAYS. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A WINTER STORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR HAZARDOUS WINTER WEATHER IN AND CLOSE TO THE WATCH AREA. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO.