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SNOW: A winter storm will impact northwest Wyoming through Saturday afternoon. The heaviest snow will occur Saturday morning.  As of 5:00 AM Saturday, much of the snow has been confined to areas near the Montana border with 12-22" falling in the northern Absaroka Range. Additional snowfall totals on Saturday will generally range from 4-8" in the mountains. Valley locations may only see 1-3" of snow, with locally higher amounts in northern Grand Teton National Park.

COLD and WIND: East of the Continental Divide the story will be very cold temperatures and gusty westerly wind. An Arctic cold front will keep northern Wyoming in the deep freeze into Saturday morning. This front may briefly retreat north Saturday only to push south again late Saturday afternoon and night.  Gusty westerly wind is anticipated ahead of this Arctic front across southwest Wyoming, mainly Sweetwater County. Wind speeds on Saturday will increase to 20 to 30 mph with gusts of 40 to as high as 50 mph.

IMPACTS:

  • Travel over western and northern mountain passes, primarily Chief Joseph and to a lesser extent Teton and Togwotee, will be difficult at times through at least Saturday.
  • Gusty west wind will create hazardous crosswinds Saturday on US 189 and US 191 in Sweetwater County.
     
Click to enlarge

Model Forecast of precipitation every hour
from 5 am to 5 pm Saturday.
 Darker blue shades   represent heavier snow.

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Quick View of Hazards and Forecast Wind Gusts (created at 5:00 AM Saturday 12/30/17)
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  Winter Storm Warnings   and  Winter Weather Advisories 
in Effect until 5 pm Saturday
for northern and western Wyoming

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Strong wind gusts of over 50 mph could result in
loss of vehicle control or a blow over to high profile
trucks with an empty or light load.

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Snowfall Forecast

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Temperature Forecasts

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Saturday's High Temperature
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Sunday's High Temperature
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Snow Totals and Wind Reports will be posted and updated here once the storm occurs
(Please double check date and time of product)

                        
779
NOUS45 KRIW 260029
PNSRIW
WYZ001>020-022>030-261220-

Public Information Statement
National Weather Service Riverton WY
520 PM MST Tue Feb 25 2025

...SUMMARY...

A weather system and strong jet stream have impacted the area for
the past two days. While western mountains received accumulating
snow most locations remained dry and windy. Very strong wind
occurred in the Absaroka Mountains and Cody Foothills on Monday and
those strong winds shifted southeast through central Wyoming on
Tuesday as a cold front pushed south. Strong wind just above the
surface was able to make it`s way down to the surface Tuesday
morning through Tuesday afternoon, resulting in wind gusts of 50-65
mph for a large area in central Wyoming. The strongest wind was
experienced in Casper. Not included in this list is strong wind
gusts around 50 mph in the Jackson Valley due to a snow squall
Tuesday morning.

...HIGHEST WIND REPORTS...

Location                     Speed     Time/Date       Elevation (ft.)

...Wyoming...

...Fremont County...
Red Canyon - South Pass      78 MPH    1248 PM 02/25   6581
Lava Mountain (BTAVAL)       77 MPH    0300 AM 02/25   10359
Fort Washakie 10 W           75 MPH    0401 AM 02/24   9234
Muddy Gap 7 SW               73 MPH    0150 PM 02/25   7379
Beaver Rim (WYDOT)           55 MPH    0218 AM 02/25   6745
Sinks Canyon                 55 MPH    1240 PM 02/25   6242

...Hot Springs County...
Meeteetse 10 S               71 MPH    1242 AM 02/25   7126
Boysen Peak                  63 MPH    0955 AM 02/25   7099

...Johnson County...
Buffalo 18 NW                60 MPH    1047 AM 02/25   8604
Buffalo Airport              55 MPH    0952 AM 02/24   4905
Story 5.5 SE (WYDOT)         55 MPH    0954 AM 02/24   4632
Tisdale Mountain             55 MPH    1130 AM 02/25   5557

...Lincoln County...
Mount Coffin (BTAVAL)        111 MPH   0745 AM 02/25   10855

...Natrona County...
Casper 2.1 SW (WYDOT)        70 MPH    0504 AM 02/25   5462
Bar Nunn 13.6 N (WYDOT)      70 MPH    1224 PM 02/25   5656
Claude Creek                 66 MPH    0940 PM 02/24   6282
Muddy Creek                  64 MPH    1040 AM 02/25   5571
Alcova 7 W (WYDOT)           64 MPH    1206 PM 02/25   6345
Coates Rd                    63 MPH    0130 AM 02/24   5866
I25 - Hat Six                63 MPH    1058 AM 02/25   5157
Hiland 16 S                  62 MPH    1010 AM 02/25   6379
Casper Airport               61 MPH    1252 PM 02/25   5327
2 SE Hiland                  59 MPH    1052 AM 02/25   6099
Hiland 2.4 SE (WYDOT)        58 MPH    1130 AM 02/25   6115
EVANSVILLE                   57 MPH    1244 AM 02/24   5187

...Park County...
Sunlight Basin 8 E (WYDOT)   81 MPH    0144 PM 02/24   8083
Dead Indian Ridge            65 MPH    0130 PM 02/24   8145
Irma Lake                    59 MPH    0500 AM 02/25   6222
Cedar Mountain               58 MPH    0700 PM 02/23   7542
Wood River East              56 MPH    0540 AM 02/25   7070
Cody 15 SE                   56 MPH    0846 AM 02/25   5520
Clark                        55 MPH    0930 PM 02/24   4270

...Sublette County...
Bondurant 2 NW               64 MPH    1251 AM 02/25   6726
Cottonwood Merna             64 MPH    0830 AM 02/25   7830
Half Moon Lake               62 MPH    0910 AM 02/25   7857
Big Piney 21 W               55 MPH    0409 PM 02/25   8200

...Sweetwater County...
Reliance 5.2 SE (WYDOT)      56 MPH    1032 PM 02/23   6345
Mustang                      56 MPH    0130 PM 02/25   846
Rock Springs 15 SE           55 MPH    0744 AM 02/24   7549

...Teton County...
Moose 4 N                    71 MPH    0658 AM 02/25   6729
Jackson Hole - Summit (BTAVA 68 MPH    0615 AM 02/25   10328
Surprise Pinnacle (BTAVAL)   66 MPH    0430 AM 02/25   9770

...Washakie County...
Big Trails 15 SSW            55 MPH    0940 AM 02/25   6554

Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers
for their dedication. Not all data listed are considered official.

$$



                

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