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Special Weather Statement

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
336 PM MST THU DEC 18 2014

WYZ001-012-013-023-024-191200-
JACKSON HOLE-SALT RIVER AND WYOMING RANGES-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-YELLOWSTONE NATIONAL PARK-
336 PM MST THU DEC 18 2014

...MAJOR WINTER STORM POSSIBLE LATE SATURDAY NIGHT THROUGH MONDAY
MORNING...

A STORM SYSTEM OVER THE WESTERN PACIFIC IS EXPECTED TO TAKE AIM ON
WESTERN WYOMING LATE IN THE WEEKEND WITH THE POTENTIAL FOR
SIGNIFICANT SNOWFALL AND WIND. SNOW IS EXPECTED TO START SATURDAY
NIGHT AND POTENTIALLY BECOME HEAVY EARLY SUNDAY MORNING AND CONTINUE
THROUGH MONDAY MORNING. SNOWFALL AMOUNTS OF 1 TO 2 FEET ARE POSSIBLE
IN THE MOUNTAINS WITH 6 TO 12 INCHES ACROSS THE JACKSON VALLEY AND
LOWER ELEVATIONS OF YELLOWSTONE NATIONAL PARK...4 TO 8 INCHES IN THE
SALT VALLEY. TEMPERATURES WILL WARM DURING THIS STORM WITH SOME
POTENTIAL THAT THE LOWER ELEVATIONS COULD SEE A RAIN SNOW MIXTURE
LATE SUNDAY INTO SUNDAY NIGHT. WINDS WILL ALSO BE ON THE INCREASE
DURING THIS STORM WITH WEST WIND OF 20 TO 30 MPH WITH GUSTS OF 50 TO
60 MPH IN THE MOUNTAINS ALONG WITH 15 TO 25 MPH WIND WITH GUSTS TO 35
MPH ACROSS THE LOWER ELEVATIONS.

STAY TUNED TO FUTURE STATEMENTS AND POTENTIAL WINTER HIGHLIGHTS.
PREPARE NOW IF YOU PLAN ON TRAVELLING ACROSS WESTERN WYOMING THIS
WEEKEND OR EARLY NEXT WEEK.

$$



Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
935 PM MST THU DEC 18 2014

WYZ001>020-022>030-191200-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
935 PM MST THU DEC 18 2014

...DENSE FOG ADVISORY FOR THE WIND RIVER BASIN UNTIL 9 AM FRIDAY
MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TONIGHT

AREAS OF DENSE FOG WILL CONTINUE ACROSS THE WIND RIVER BASIN.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SUNDAY THROUGH MONDAY...SIGNIFICANT SNOWFALL AND WIND EXPECTED IN THE
WESTERN MOUNTAINS AND POSSIBLY THE LOWER ELEVATIONS...ESPECIALLY FROM
THE JACKSON VALLEY NORTHWARD. SNOWFALL AMOUNTS OF 1 TO 2 FEET ARE
POSSIBLE IN THE WESTERN MOUNTAINS WITH SOME OF THE LOWER ELEVATIONS
FROM THE JACKSON VALLEY INTO YELLOWSTONE NATIONAL PARK POTENTIALLY
RECEIVING 6 TO 12 INCHES.

STRONG WINDS ARE ALSO EXPECTED ACROSS THE RED DESERT...INTERSTATE 80
CORRIDOR...SOUTH PASS AND JEFFREY CITY AREA TO CASPER SUNDAY
AFTERNOON INTO MONDAY AND ALSO THE ABSAROKA MOUNTAINS AND ADJACENT
CODY FOOTHILLS WITH STRONG GUSTS.

WEDNESDAY...A NEW STORM SYSTEM WILL DEVELOP TO OUR WEST SPREADING
SNOW FROM SOUTHWEST TO NORTHEAST ON CHRISTMAS EVE. STAY TUNED OVER
THE NEXT SEVERAL DAYS ON THIS POTENTIAL TRAVEL IMPACTING STORM ON
CHRISTMAS EVE THROUGH CHRISTMAS DAY FOR CENTRAL AND SOUTHWEST
WYOMING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT.

$$

TEAM RIVERTON





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