Star Valley Weather: November 2015

Thursday, November 26, 2015

Thanksgiving Day Snowfall Totals

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
0934 AM MST THU NOV 26 2015


...THANKSGIVING STORM SNOWFALL REPORTS THROUGH 0900 AM...

HEAVY SNOW IMPACTED MUCH OF CENTRAL WYOMING BEGINNING WEDNESDAY
MORNING. THE HEAVIEST SNOWFALL FELL IN FREMONT COUNTY...ALONG
FAVORED UPSLOPE SNOWFALL AREAS. ADDITIONAL REPORTS MAY BE ISSUED AS
MORE SNOWFALL REPORTS ARE RECEIVED. 

LOCATION                             SNOWFALL
LINCOLN COUNTY... 
 2 SE THAYNE...                     4.7 INCHES.
 INDIAN CREEK SNOTEL...               4 INCHES.
 SALT RIVER SUMMIT SNOTEL...          3 INCHES.
 SPRING CREEK DIVIDE SNOTEL...        3 INCHES.
 BLIND BULL SUMMIT...                 3 INCHES.
 HAMS FORK SNOTEL...                  3 INCHES.
 KELLEY RANGER STATION SNOTEL...      2 INCHES.
 BLIND BULL SUMMIT SNOTEL...          2 INCHES.
 BOX Y RANCH...                       2 INCHES.
 COMMISSARY RIDGE...                  2 INCHES.
 WILLOW CREEK SNOTEL...               1 INCH.
 LA BARGE...                          1 INCH.
 COTTONWOOD CREEK SNOTEL...           1 INCH.



BIG HORN COUNTY... 
 9 ENE GREYBULL...                  3.3 INCHES.
 BONE SPRINGS DIVIDE SNOTEL...        3 INCHES.
 SHELL CREEK SNOTEL...                2 INCHES.
 2 SSW LOVELL...                    0.6 INCHES.

FREMONT COUNTY... 
 SINKS CANYON - MU CAMP...           14 INCHES.
 LANDER...                         11.5 INCHES.
 6 SW LANDER...                    11.5 INCHES.
 LANDER AIRPORT...                   11 INCHES.
 9 S LANDER...                       10 INCHES.
 LANDER...                           10 INCHES.
 7 WNW LANDER...                    9.9 INCHES.
 9 SSE LANDER...                    9.5 INCHES.
 RIVERTON AIRPORT...                9.1 INCHES.
 4 NW LANDER...                       9 INCHES.
 HOBBS PARK SNOTEL...                 9 INCHES.
 LANDER...                          8.8 INCHES.
 HUDSON...                          8.5 INCHES.
 2 W RIVERTON...                      8 INCHES.
 TOWNSEND CREEK SNOTEL...             8 INCHES.
 1 SE LANDER...                       8 INCHES.
 RIVERTON...                        7.8 INCHES.
 2 W RIVERTON...                      7 INCHES.
 COLD SPRINGS SNOTEL...               4 INCHES.
 DEER PARK SNOTEL...                  4 INCHES.
 ST. LAWRENCE ALT SNOTEL...           4 INCHES.
 SOUTH PASS SNOTEL...                 4 INCHES.
 BROOKS LAKE...                       4 INCHES.
 BURROUGHS CREEK SNOTEL...            4 INCHES.
 CASTLE CREEK SNOTEL...               3 INCHES.
 SHOSHONI...                        1.1 INCHES.

HOT SPRINGS COUNTY... 
 OWL CREEK SNOTEL...                  5 INCHES.
 THERMOPOLIS...                       4 INCHES.
 KIRBY...                           3.5 INCHES.
 8 W THERMOPOLIS...                   3 INCHES.
 3 NE THERMOPOLIS...                2.6 INCHES.
 2 S THERMOPOLIS...                 2.5 INCHES.
 THERMOPOLIS...                       2 INCHES.

JOHNSON COUNTY... 
 17 NNW KAYCEE...                   4.5 INCHES.
 HANSEN SAWMILL SNOTEL...             4 INCHES.
 SOLDIER PARK SNOTEL...               3 INCHES.
 BEAR TRAP MEADOW SNOTEL...           3 INCHES.
 CLOUD PEAK RESERVOIR SNOTEL...       2 INCHES.
 LITTLE GOOSE SNOTEL...               2 INCHES.


NATRONA COUNTY... 
 CASPER AIRPORT...                  5.1 INCHES.
 4 WSW CASPER...                    4.8 INCHES.
 2 S CASPER...                      4.5 INCHES.
 5 SSW CASPER...                      4 INCHES.
 CASPER...                            4 INCHES.
 10 WSW CASPER...                     3 INCHES.
 MIDWEST...                           3 INCHES.
 GRAVE SPRING SNOTEL...               3 INCHES.
 CASPER MOUNTAIN SNOTEL...            2 INCHES.
 MIDWEST...                           2 INCHES.
 RENO HILL SNOTEL...                  1 INCH.

PARK COUNTY... 
 BLACKWATER SNOTEL...                 2 INCHES.
 3 NW MEETEETSE...                    2 INCHES.
 MEETEETSE...                         2 INCHES.
 KIRWIN SNOTEL...                     2 INCHES.
 EVENING STAR SNOTEL...               2 INCHES.
 2 WSW CODY...                        2 INCHES.
 MARQUETTE SNOTEL...                  1 INCH.
 TIMBER CREEK SNOTEL...               1 INCH.
 YOUNTS PEAK SNOTEL...                1 INCH.
 26 SW CODY...                      0.9 INCHES.
 3 NE SUNSHINE...                   0.3 INCHES.
 LAMAR RANGER STATION...            0.2 INCHES.

SUBLETTE COUNTY... 
 MARBLETON...                         6 INCHES.
 SNIDER BASIN SNOTEL...               5 INCHES.
 14 NW PINEDALE...                  4.5 INCHES.
 PINEDALE...                        4.5 INCHES.
 TRIPLE PEAK SNOTEL...                4 INCHES.
 MARBLETON...                       3.5 INCHES.
 EAST RIM DIVIDE SNOTEL...            3 INCHES.
 KENDALL RANGER STATION SNOTEL...     2 INCHES.
 4 S BIG PINEY...                     2 INCHES.
 PINEDALE...                          2 INCHES.
 LOOMIS PARK SNOTEL...                2 INCHES.
 NEW FORK LAKE SNOTEL...              1 INCH.

SWEETWATER COUNTY... 
 ROCK SPRINGS...                      1 INCH.

TETON COUNTY... 
 GROS VENTRE SUMMIT SNOTEL...         3 INCHES.
 4 SW JACKSON...                    2.5 INCHES.
 TOGWOTEE PASS SNOTEL...              2 INCHES.
 BASE CAMP SNOTEL...                  2 INCHES.
 JACKSON HOLE - RAYMER...             2 INCHES.
 JACKSON HOLE - RENDEZVOUS BOWL...    2 INCHES.
 5 NW JACKSON...                    1.5 INCHES.
 JACKSON HOLE - BASE...               1 INCH.
 GRANITE CREEK SNOTEL...              1 INCH.
 PHILLIPS BENCH SNOTEL...             1 INCH.
 JACKSON HOLE - MID MOUNTAIN...       1 INCH.
 SNOW KING...                         1 INCH.
 DARWIN RANCH...                    0.5 INCHES.
 GRAND TARGHEE - CHIEF JOSEPH...    0.1 INCHES.
 TOGWOTEE MOUNTAIN LODGE...         0.1 INCHES.

WASHAKIE COUNTY... 
 5 NNW TEN SLEEP...                 3.5 INCHES.
 WINCHESTER...                      2.5 INCHES.
 MIDDLE POWDER SNOTEL...              2 INCHES.
 POWDER RIVER PASS SNOTEL...          1 INCH.

YELLOWSTONE NATIONAL PARK... 
 CANYON SNOTEL...                     1 INCH.
 SYLVAN LAKE SNOTEL...                1 INCH.
 TOWER FALLS RANGER STATION...      0.5 INCHES.

$$

Wednesday, November 25, 2015

Thanksgiving Day Storm Update

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
145 AM MST WED NOV 25 2015

...MAJOR WINTER STORM TO IMPACT CENTRAL WYOMING TODAY THROUGH
THANKSGIVING DAY...

.A STRONG STORM SYSTEM WILL MOVE INTO THE NORTHERN GREAT BASIN TODAY
BEFORE SLOWING DOWN AND REMAINING OVER THE AREA THROUGH
THANKSGIVING DAY. THIS STORM SYSTEM WILL BRING SHARPLY COLDER
CONDITIONS TO THE AREA ALONG WITH MODERATE TO POTENTIALLY HEAVY
SNOW AT TIMES TODAY THROUGH THURSDAY AS WELL AS PERIODS OF STRONG
WIND WITH BLOWING AND DRIFTING SNOW AND WIND CHILLS WELL BELOW
ZERO BY LATE TONIGHT.

WYZ024-252300-
/O.CON.KRIW.WW.Y.0025.151125T2100Z-151127T0000Z/
SALT RIVER AND WYOMING RANGES-
145 AM MST WED NOV 25 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM THIS
AFTERNOON TO 5 PM MST THURSDAY...

* TIMING...PERIODS OF SNOW WILL MOVE INTO THE WEST THIS AFTERNOON.
  SNOW WILL BE MODERATE TO HEAVY AT TIMES THIS EVENING THROUGH
  THURSDAY MORNING. SNOW WILL TAPER OFF FROM NORTH TO SOUTH LATE
  THURSDAY AFTERNOON.

* SNOW AMOUNTS...6 TO 12 INCHES.

* WIND AND VISIBILITY...EAST WIND AROUND 20 MPH WITH GUSTS
  AROUND 35 MPH IN EXPOSED AREAS WITH STEADY SNOW WILL REDUCE
  THE VISIBILITY UNDER ONE MILE AT TIMES.

* MAIN IMPACT...SNOW...BLOWING SNOW AND COOLER TEMPERATURES WILL
  MAKE TRAVEL AND OUTDOOR ACTIVITIES HAZARDOUS...ESPECIALLY AT
  PASS LEVEL. ROADS WILL BECOME SLICK AND SNOW-PACKED LATER TODAY AND
  VISIBILITIES WILL BE SHARPLY REDUCED AT TIMES. SLOW DOWN AND
  ARRIVE SAFELY AT YOUR DESTINATION. CHECK THE LATEST ROAD
  CONDITIONS AT WYOROAD.INFO OR BY DIALING 5 1 1.

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.

A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

$$

Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
343 AM MST WED NOV 25 2015

WYZ001>020-022>030-261045-
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-CODY FOOTHILLS-
NORTH BIG HORN BASIN-SOUTHWEST BIG HORN BASIN-
SOUTHEAST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS-
BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST-
NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY-
TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE-
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-STAR VALLEY-
SALT RIVER AND WYOMING RANGES-UPPER GREEN RIVER BASIN FOOTHILLS-
UPPER GREEN RIVER BASIN-SOUTH LINCOLN COUNTY-
ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY-
343 AM MST WED NOV 25 2015

...BLIZZARD WARNING FOR SWEETWATER COUNTY AND INTERSTATE 80
LATE TODAY AFTERNOON THROUGH THURSDAY...

...WINTER STORM WARNING FOR PARTS OF CENTRAL AND SOUTHWEST WYOMING
TODAY THROUGH THURSDAY...

...WINTER WEATHER ADVISORY FOR PORTIONS OF WESTERN AND CENTRAL
WYOMING TODAY THROUGH THURSDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

TODAY AND TONIGHT...A SIGNIFICANT WINTER STORM WILL GAIN STRENGTH OVER
THE GREAT BASIN INTO SOUTHWESTERN WYOMING TODAY...IMPACTING MUCH
OF THE AREA BEGINNING THIS MORNING UP NORTH...PROCEEDING SOUTHWARD
THROUGH THE DAY...THEN CONTINUING THROUGH THE OVERNIGHT PERIOD.
SNOW WILL BE HEAVY AT TIMES...ESPECIALLY TONIGHT. GUSTY STRONG
NORTH TO NORTHEAST WINDS WILL ACCOMPANY THIS STORM
SYSTEM...CREATING AREAS OF BLOWING AND DRIFTING SNOW.

ALL THIS WILL CREATE HAZARDOUS DRIVING CONDITIONS IN MANY
LOCATIONS. PEOPLE PLANNING TRAVEL TODAY AND TONGIHT SHOULD CHECK
ON THE LATEST FORECASTS...EITHER FROM OUR WEBSITE OR FROM OUR
SOCIAL MEDIA OUTLETS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THANKSGIVING DAY...MODERATE TO OCCASIONALLY HEAVY SNOW WILL
CONTINUE THANKSGIVING MORNING...TAPERING OFF IN THE AFTERNOON.
GUSTY TO STRONG NORTH TO NORTHEAST WINDS WILL CREATE AREAS OF
BLOWING AND DRIFTING SNOW.

ALL THIS WILL CONTINUE HAZARDOUS DRIVING CONDITIONS ACROSS MANY
LOCATIONS. PEOPLE PLANNING TRAVEL THANKSGIVING DAY SHOULD CHECK
ON THE LATEST FORECASTS...EITHER FROM OUR WEBSITE OR FROM OUR
SOCIAL MEDIA OUTLETS.

FRIDAY NIGHT AND SATURDAY...LIGHT AREAS OF SNOW EXPECTED TO
SPREAD MAINLY INTO SOUTHWEST AND SOUTH CENTRAL WYOMING.

SUNDAY...LIGHT AREAS OF SNOW POSSIBLY SPREADING INTO NORTH AND
CENTRAL WYOMING.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT FINAL SNOWFALL AMOUNTS. THANK
YOU.

Monday, November 23, 2015

Update on the Thanksgiving Winter Storm

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
323 PM MST MON NOV 23 2015

WYZ001>004-006>013-016-020-022>030-241200-
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-CODY FOOTHILLS-
NORTH BIG HORN BASIN-SOUTHEAST BIG HORN BASIN-
OWL CREEK AND BRIDGER MOUNTAINS-BIGHORN MOUNTAINS WEST-
BIGHORN MOUNTAINS SOUTHEAST-NORTHEAST JOHNSON COUNTY-
SOUTHEAST JOHNSON COUNTY-TETON AND GROS VENTRE MOUNTAINS-
JACKSON HOLE-UPPER WIND RIVER BASIN-
NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-STAR VALLEY-
SALT RIVER AND WYOMING RANGES-UPPER GREEN RIVER BASIN FOOTHILLS-
UPPER GREEN RIVER BASIN-SOUTH LINCOLN COUNTY-
ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL...CODY...
MEETEETSE...POWELL...LOVELL...GREYBULL...BASIN...WORLAND...
BUFFALO...KAYCEE...JACKSON...DUBOIS...CASPER...AFTON...ALPINE...
STAR VALLEY RANCH...THAYNE...PINEDALE...LA BARGE...BIG PINEY...
FARSON...KEMMERER...COKEVILLE...ROCK SPRINGS...GREEN RIVER...
WAMSUTTER
323 PM MST MON NOV 23 2015

...SIGNIFICANT WINTER STORM IS SET TO IMPACT TRAVELLERS WEDNESDAY
THROUGH THANKSGIVING DAY...

A SIGNIFICANT WINTER STORM WITH PLENTY OF COLD AIR AND AREAS OF
STRONG WIND WILL IMPACT MUCH OF THE AREA WEDNESDAY THROUGH
THURSDAY. WINTER HIGHLIGHTS HAVE ALREADY BEEN ISSUED FOR SOME
AREAS AND THESE WILL LIKELY EXPAND OVER NEXT DAY OR SO. PERIODS
OF SNOW WILL BEGIN TO MOVE INTO NORTHERN WYOMING AS EARLY AS
TUESDAY NIGHT...MOVING SOUTH ON WEDNESDAY AND PERSISTING ACROSS
THE REGION THROUGH THANKSGIVING DAY. AT THIS TIME...IT LOOKS LIKE
THE HEAVIEST SNOW AND STRONGEST WINDS WILL OCCUR WEDNESDAY NIGHT
AND EARLY THANKSGIVING DAY. SNOW WILL THEN SLOWLY TAPER OFF
THURSDAY NIGHT THROUGH FRIDAY.

WIND GUSTS OF 40 TO 50 MPH OVER SOUTH PASS AND ALONG PORTIONS OF
INTERSTATE 80 WEDNESDAY THROUGH THURSDAY WILL CONSIDERABLE BLOWING
AND DRIFTING SNOW. EARLY INDICATIONS POINT TO SNOWFALL AMOUNTS OF
3 TO 6 INCHES IN MANY AREAS EXCEPT FOR CONSIDERABLY MORE IN PARTS
OF CENTRAL WYOMING WHERE WINTER STORM WATCHES HAVE ALREADY BEEN
ISSUED.

VERY COLD AIR WILL SETTLE IN BEHIND THE SNOW...HIGH TEMPERATURES
MAY ONLY STRUGGLE INTO THE SINGLE DIGITS ON THANKSGIVING DAY WITH
BREEZY NORTHEAST WINDS KEEPING WIND CHILLS WELL BELOW ZERO.

TWO OF THE BUSIEST TRAVEL DAYS OF THE YEAR COULD BE SIGNIFICANTLY
IMPACTED AS WIDESPREAD SNOW...BLOWING AND DRIFTING SNOW COULD
MAKE TRAVEL DIFFICULT IF NOT IMPOSSIBLE ALONG INTERSTATES 80 90
AND 25. LOW VISIBILITY AND STRONG WIND COULD ALSO LEAD TO FLIGHT
DELAYS AND CANCELLATIONS.

ANOTHER SNOW EVENT IS POSSIBLE NEXT WEEKEND WHEN MANY TRAVELERS
WOULD BE RETURNING HOME. HOWEVER...DETAILS CONCERNING THIS ARE NOT
YET CLEAR SO STAY TUNED.

IF YOU ARE PLANNING TO TRAVEL THIS WEEK...YOU ARE URGED TO WATCH
FOR UPDATES ON THIS DEVELOPING WINTER STORM.

Sunday, November 22, 2015

`Thanksgiving Winter Storm Forecast for Wyoming

Summary | Forecast | Travel Center | Monitoring & Reporting | Safety

SYNOPSIS: A significant winter storm over the Great Basin will likely impact much of the area beginning late Tuesday Night with snow, heavy at times, possible through Thanksgiving Day.

Colder upslope flow will develop east of the Continental Divide Wednesday with areas form Casper to Lander and southward looking most favorable for the heaviest snow amounts.

Strong northeast winds will likely cause areas of blowing and drifting snow, with areas of very limited visibility across portions of central and southern Wyoming, including Interstate 80. The details of this upcoming winter storm are still coming into view, but those who are planning to travel this holiday should pay close attention to the timing and expected impacts of this storm.

Click Loop To Enlarge

The above loop shows what one of our model solutions - the Global Forecast Model (GFS) is advertising for accumulating snow amounts for this storm. It would not be a great idea to focus on the exact amounts at this time, but if you are curious, the red shaded areas show over 5" of storm total accumulation, with a bulls-eye of over a foot in the central Wind River Basin, along portions of the Interstate 80 corridor, and in the Tetons.

What you should note is the large area that is expecting significant, disruptive snow accumulations with the primary impact form the storm expected on two of the busiest travel days of the year, the day before Thanksgiving through Thanksgiving Day.

IMPACTS:

Click Image To Enlarge

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