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Winter Weather Advisory


URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
258 PM PST THU DEC 18 2014

...ANOTHER ROUND OF SNOW WILL IMPACT SIERRA TRAVEL FRIDAY...

.MORE SNOW WILL MOVE INTO THE SIERRA ON FRIDAY. SIERRA TRAFFIC
TENDS TO BE HIGHER VOLUME ON FRIDAYS AND THIS STORM WILL LIKELY
CAUSE TRAVEL DELAYS AND CHAIN RESTRICTIONS.

CAZ068-069-191400-
/O.NEW.KSTO.WW.Y.0020.141219T1200Z-141220T0600Z/
WESTERN PLUMAS COUNTY/LASSEN PARK-
WEST SLOPE NORTHERN SIERRA NEVADA-
258 PM PST THU DEC 18 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 10 PM PST
FRIDAY ABOVE 6000 FEET...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER
WEATHER ADVISORY ABOVE 6000 FEET FOR SNOW...WHICH IS IN EFFECT
FROM 4 AM TO 10 PM PST FRIDAY.

* SNOW ACCUMULATIONS: 3 TO 6 INCHES.

* ELEVATION: ABOVE 6000 FEET.

* TIMING: HEAVIEST SNOW WILL OCCUR FRIDAY MORNING INTO FRIDAY
  NIGHT.

* LOCATIONS INCLUDE: LASSEN NATIONAL PARK...INTERSTATE 80 AND
  HIGHWAYS 50 AND 88.

* WINDS: SOUTH 5 TO 15 MPH WITH GUSTS UP TO 35 MPH.

* IMPACTS: ROAD CONDITIONS WILL BE SLICK DUE TO SNOW. TRAVEL
  DELAYS EXPECTED WITH CHAIN RESTRICTIONS.

* FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT
  HTTP://WWW.WEATHER.GOV/SACRAMENTO/HAZARDS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

INTERACT WITH US VIA SOCIAL MEDIA
WWW.FACEBOOK.COM/NWS.SACRAMENTO
WWW.TWITTER.COM/NWSSACRAMENTO

$$


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.

$$

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
559 AM MST THU DEC 18 2014

IDZ017>025-031-032-191300-
EASTERN MAGIC VALLEY-SAWTOOTH MOUNTAINS-UPPER SNAKE HIGHLANDS-
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
BIG AND LITTLE WOOD RIVER REGION-LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
STANLEY...CLAYTON...DRIGGS...DUBOIS...ISLAND PARK...ST. ANTHONY...
EDIE SCHOOL...IDAHO FALLS...REXBURG...RIGBY...POCATELLO...
BLACKFOOT...FORT HALL...AMERICAN FALLS...MALAD CITY...OAKLEY...
ROCKLAND...DOWNEY...LAVA HOT SPRINGS...SODA SPRINGS...WAYAN...
PRESTON...DAYTON...MONTPELIER...GEORGETOWN...PARIS...HAILEY...
KETCHUM...SUN VALLEY...BELLEVUE...ARCO...CHALLIS...MACKAY
559 AM MST THU DEC 18 2014

...HEAVY SNOW POSSIBLE IN THE MOUNTAINS OF SOUTHEAST IDAHO
SATURDAY THROUGH MONDAY...

A PATTERN OF RATHER MOIST WESTERLY WINDS OFF THE PACIFIC IS
EXPECTED TO DEVELOP ACROSS SOUTHEAST IDAHO THIS WEEKEND AND MAY
BRING SOME HEAVY SNOW ACCUMULATION TO THE MOUNTAIN AREAS. THERE
IS ALSO POTENTIAL FOR SOME STRONG WINDS OVER THE MOUNTAINS TOPS TO
DEVELOP BY SUNDAY THAT COULD CREATE SOME HAZARDOUS BLOWING AND
DRIFTING CONDITIONS. THIS IS A DEVELOPING SITUATION AND
IMPLICATIONS FOR THE LOWER VALLEYS AND INTERSTATES IS UNCERTAIN AT
THIS TIME ALTHOUGH RAIN IS MAINLY EXPECTED IN THE SNAKE RIVER PLAIN.
IF YOU ARE PLANNING ON TRAVEL THAT WILL INCLUDE MOUNTAIN PASSES
THIS WEEKEND...STAY INFORMED ON THE LATEST WEATHER FORECASTS.


$$


Hazardous Weather Outlook


HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
350 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-
350 PM MST THU DEC 18 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TONIGHT

AREAS OF 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

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
451 AM MST THU DEC 18 2014

UTZ001>016-019>021-517-518-WYZ021-191300-
CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT-
SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT-
GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS-
WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80-
WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS-
WESTERN UINTA BASIN-CASTLE COUNTRY-SAN RAFAEL SWELL-
SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-SOUTHWEST UTAH-
UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH-
GLEN CANYON RECREATION AREA/LAKE POWELL-CENTRAL MOUNTAINS-
SOUTHERN MOUNTAINS-SOUTHWEST WYOMING-
451 AM MST THU DEC 18 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF
UTAH AND SOUTHWEST WYOMING.

.DAY ONE...TODAY AND TONIGHT

MOSTLY CLOUDY CONDITIONS WILL PREVAIL WITH A SLIGHT CHANCE OF SNOW
SHOWERS IN THE MOUNTAINS TODAY.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

AN EXTENDED PERIOD OF PRECIPITATION IS EXPECTED OVER THE NORTHERN
THIRD OF UTAH AND SOUTHWEST WYOMING SATURDAY THROUGH TUESDAY. THE
HEAVIEST PRECIPITATION IS LIKELY TO OCCUR SUNDAY INTO MONDAY NORTH
OF INTERSTATE 80 AS WEAK DISTURBANCES EMBEDDED IN THE NORTHWEST
FLOW MOVES ACROSS THE REGION. SIGNIFICANT ACCUMULATIONS ARE LIKELY
ABOVE 7500 FEET.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

$$

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY/ (ALL LOWER CASE)

FOR INFORMATION ON POTENTIAL ROAD TRAVEL IMPACTS VISIT...
HTTP://WWW.UDOTTRAFFIC.UTAH.GOV/ROADWEATHERFORECAST.ASPX

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E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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