National Weather Service United States Department of Commerce

Areas of Showers and Thunderstorms to Start the Work Week

Areas of rain and thunderstorms are forecast Monday across the central and eastern states. Some mixed rain and snow is possible in the high Sierra Mountains. Heavy to excessive rain may bring flooding in the central Appalachians. Read More >

Summary | Forecast | Observed Snow and Wind | Travel Center | Monitoring & Reporting | Safety


SYNOPSIS:


A strong cold front will move across the area today.  Snow, blowing and drifting snow will cause hazardous travel conditions across the west through the afternoon. Winter Storm Warnings and Winter Weather Advisories are in effect for far western portions until 5 pm. Snowfall amounts of 6 to 10 inches for the mountains, with local amounts of 9 to 15 inches in the Tetons. Lower elevations in the far west will see 4 to 5 inches. Other areas of the state south may see a dusting of snow up to a couple of inches.

Strong winds will also accompany the system in the western mountains, , I-80 and the southern wind corridor and northern I-25 corridor. High Wind Warnings are in effect for portions of Fremont, Natrona and Johnson Counties today where wind gusts over 60 mph are expected. Strong northwest wind will continue across the Wind River Basin and northeast Johnson County through this evening. 

IMPACTS:

  • Western mountain and valley roads will be slick and hazardous due to falling snow and windy conditions.
  • Strong to High Winds will create hazardous driving conditions and areas of blowing snow.
    • Southeast Fremont and Natrona counties will see High Wind gusts to 60 mph into this afternoon.
    • Interstate 80 could see strong winds up to 50 mph today.
    • The Wind River Basin and northeast Johnson County could see northwest winds gusting near 60  mph this afternoon and evening.

Top Menu

 

 Summary | Forecast | Observed Snow and WindTravel Center | Monitoring & Reporting | Safety
 

NWS Text Products and Forecasts

  Area Forecast Discussion
  Winter Weather Statement
  Special Weather Statement
  What's a "Watch?"
  Observed Snow Totals or High Wind
 High Wind Statement
 Weather Story

Quick View of Hazards, Simulated Radar Imagery, and Forecast Snow Totals (created at 6 AM 12/12)
Click Images To Enlarge
Click to enlarge


 Winter Storm Warnings and Winter Weather Advisories are in effect until 5 pm Wednesday 

High Wind Warnings are in effect for southeast Fremont and Natrona Counties until 2 PM Wednesday

High Wind Warnings are in effect for the Wind River Basin and Northeast Johnson County from noon today until midnight Wednesday night.

Click to enlarge   Click to enlarge  

Current Radar Loop
Click Images To Enlarge

Radar simulation of timing of snow beginning
at 5 AM Wednesday until 8 PM Wednesday night. The
darker blue shades represent heavier snow.

 

 



Snow and Wind Forecasts for Wednesday
Click Images To Enlarge

Click to enlarge Click to enlarge

Forecast Snowfall on Wednesday

Wednesday's Peak Wind Gusts

 Top Menu

 

Snow Totals and Wind Reports will be posted and updated here once the storm occurs
(Please double check date and time of product)

                        
325
NOUS45 KRIW 201825
PNSRIW
WYZ001>020-022>030-210600-

Public Information Statement
National Weather Service Riverton WY
1225 PM MDT Sun Sep 20 2026

...24-HOUR RAINFALL TOTALS ENDING 12 PM SUNDAY...

Location                     Amount     Elev.
                                        (ft.)
...Big Horn County...
Willow Creek                 0.49 in    4310
Bone Springs (SNO)           0.40 in    9350
Mill Creek                   0.23 in    8947
Lovell (CWOP)                0.14 in    3964
Greybull Airport (ASOS)      0.11 in    3934
Byron (CWOP)                 0.10 in    4022
Hyatt High                   0.09 in    5670
Byron 2.9 WSW (COCO)         0.08 in    4040

...Fremont County...
Lander 0.4 WNW (COCO)        2.57 in    5367
Lander 2 (CWOP)              2.27 in    5278
Lander Airport (ASOS)        2.14 in    5587
Sharpnose                    2.04 in    5555
Riverton 1.3 ESE (COCO)      1.98 in    4998
Riverton 2.2 WSW (COCO)      1.83 in    5033
Riverton 4.1 SW (COCO)       1.65 in    5034
Shoshoni 13 NW (HADS)        1.64 in    4760
Kinnear 1 (CWOP)             1.39 in    5488
NWS Riverton Office          1.36 in    5575
Riverton Airport (ASOS)      1.34 in    5443
Pavillion 5.8 E (COCO)       1.33 in    5322
Riverton 8.4 N               1.27 in    5232
Riverton (COOP)              1.26 in    4955
Riverton CWC (AWS)           1.26 in    5372
Riverton 3 (CWOP)            1.18 in    5390
Shoshoni                     1.17 in    4820
Lander 4 WSW (COCO)          1.06 in    5768
Riverton 17.8 NW             1.02 in    5393
Pavillion 4 E (COCO)         1.00 in    5353
RED CANYON RANCH NC LANDER 1 0.97 in    5777
Riverton 1 (AWS)             0.95 in    4989
Lander 6 SW (COCO)           0.90 in    6088
Lander 7 WNW (COCO)          0.89 in    6042
Lander 9 SSE (COCO)          0.89 in    5818
RED CANYON RANCH NC LANDER 1 0.89 in    5777
Fort Washakie 3.7 SE (COCO)  0.88 in    5548
Riverton 1 (CWOP)            0.84 in    4920
Lander 5.9 SSE (COCO)        0.80 in    5556
Lander 1 (CWOP)              0.75 in    5797
Lander 9.3 S (COCO)          0.65 in    5995
Wind River                   0.63 in    9235
Crowheart (CWOP)             0.41 in    6137
Castle Creek (SNO)           0.40 in    8399
Burroughs Creek (SNO)        0.30 in    8750
Jeffrey City (CWOP)          0.24 in    6442
Anderson Ridge               0.16 in    8120
Dubois (COOP)                0.06 in    6955
Camp Creek                   0.05 in    7380
Riverton 2 (AWS)             0.05 in    4990
Rasberry                     0.04 in    8833
Elkhorn                      0.01 in    8085

...Hot Springs County...
Thermopolis 15.8 WNW (COCO)  0.83 in    5164
Lucerne (COOP)               0.77 in    4282
Thermopolis 18.6 E (COCO)    0.73 in    4879
Thermopolis 0.3 NE (COCO)    0.70 in    4341
Anchor Dam (HADS)            0.66 in    6250
Thermopolis (CWOP)           0.61 in    4425
Thermopolis 33.2 W (COCO)    0.59 in    6612
Thermopolis 2.8 SSW (COCO)   0.52 in    4617
Thermopolis 10.7 N (COCO)    0.48 in    4352
Kirby (CWOP)                 0.47 in    4350
Thermopolis 6 NNE (COCO)     0.37 in    4434
Grass Creek                  0.35 in    7127
Hot Springs Airport (AWOS)   0.26 in    4903

...Johnson County...
Poker Creek                  0.77 in    6439
Buffalo 4 SSW (COCO)         0.73 in    5262
Buffalo 2 (CWOP)             0.61 in    4370
Cloud Peak Reservoir (SNO)   0.60 in    9859
Buffalo 1 (CWOP)             0.56 in    4675
Kaycee 5.2 NNW (COCO)        0.50 in    4917
Buffalo 0.8 ENE (COCO)       0.46 in    4657
Buffalo Airport (ASOS)       0.45 in    4925
Barnum (HADS)                0.38 in    5075
School House                 0.32 in    8604
Bear Trap Meadow (SNO)       0.30 in    8200
Story 8 S (HADS)             0.29 in    5278
Kaycee 14.6 W (COCO)         0.24 in    5247
Kaycee 17 NNW (COCO)         0.24 in    5056
Kaycee 10.9 WNW (COCO)       0.20 in    5481
Buffalo 15 W (HADS)          0.17 in    8398
Kaycee 2 (CWOP)              0.16 in    5403
Buffalo 13 SSE (COCO)        0.11 in    4819
Story 4 SE (HADS)            0.11 in    4662

...Lincoln County...
Blind Bull Summit (SNO)      0.70 in    8649
Cottonwood Creek (SNO)       0.50 in    7669
Afton 1 (CWOP)               0.42 in    6257
Afton 2 (CWOP)               0.31 in    6267
Afton 0.6 NW (AG)            0.26 in    6210
Geneva 11 E (HADS)           0.18 in    6649
Kelly                        0.17 in    8470
Thayne 2 SE (COCO)           0.07 in    6086
Star Valley Ranch (CWOP)     0.06 in    6370
Star V Ranch 0.3 WNW (COCO)  0.05 in    6253
Bedford 1.8 S (COCO)         0.04 in    6302
Alpine 5.9 S (COCO)          0.04 in    5932
Bedford (CWOP)               0.03 in    6279
Snake River (DOTAV)          0.01 in    5698
Etna 1 (CWOP)                0.01 in    5692

...Natrona County...
Powder River 0.1 NNE (COCO)  1.59 in    5714
Casper (CWOP)                0.25 in    5341
Reno Hill (SNO)              0.20 in    8399
Casper Mtn                   0.19 in    7740
Fales Rock                   0.18 in    6379
Bar Nunn (CWOP)              0.14 in    5275
Casper 0.7 WSW (COCO)        0.12 in    5224
Casper Airport (ASOS)        0.12 in    5348
Casper 1 NW (COCO)           0.11 in    5142
Mills 2 SW (COCO)            0.10 in    5211
Casper 6.6 S                 0.08 in    7978
Casper 1.5 SW (COCO)         0.05 in    5406
Casper 1.7 W (COCO)          0.05 in    5146
Casper 1.5 SW (COCO)         0.04 in    5350
Casper 7.5 W (COCO)          0.03 in    5361
Casper 3 E (COCO)            0.03 in    5378
Casper 1.2 E (COCO)          0.02 in    5285
Casper 17.2 SW (COCO)        0.01 in    5364
Mills 12.8 SSE (COCO)         Trace     7940

...Park County...
Wapiti (CWOP)                0.44 in    5993
Tower Falls YNP (COOP)       0.34 in    6275
Cody 20.9 W (COCO)           0.30 in    5815
Wapiti (HADS)                0.24 in    5398
Cody 21.9 W (COCO)           0.23 in    5887
Rattlesnake Mtn              0.23 in    8401
Cody 2 WSW (COCO)            0.21 in    5161
Cody (COOP)                  0.21 in    5280
Eagle                        0.19 in    7500
Cody 1 SE (COCO)             0.11 in    5102
Powell 0.5 WNW (COCO)        0.08 in    4412
Powell 0.2 ESE (COCO)        0.08 in    4392
Fort Collins (CWOP)          0.08 in    5102
Dry Creek                    0.08 in    5520
Cody 0.4 SE (COCO)           0.07 in    5090
Meeteetse 4 NNE (COCO)       0.07 in    5522
Powell 24.2 WNW (COCO)       0.07 in    4412
Grebe                        0.07 in    7899
Powell 4 WSW (COCO)          0.06 in    4509
Powell 2 (CWOP)              0.06 in    4381
Meeteetse 2 SE (COCO)        0.05 in    6071
Powell 5 E (COCO)            0.05 in    4276
Crandall                     0.04 in    6640
Meeteetse (CWOP)             0.04 in    5749
Pahaska (COOP)               0.03 in    6692
Cabin Creek                  0.03 in    8650
Quadrant                     0.03 in    7900
Cody Airport (AWOS)          0.03 in    5089
Cody 7.3 SW (COCO)           0.02 in    5419
Cody 6.5 SW                  0.02 in    5400
Cody 7.2 NNE (COCO)          0.01 in    4859
Wrbb Port No. 1              0.01 in    4750
Clark (CWOP)                 0.01 in    4270

...Sublette County...
Elkhart Park (SNO)           1.10 in    9399
Marbleton (CWOP)             0.51 in    6850
Daniel (COOP)                0.34 in    7341
Marbleton (AWS)              0.23 in    6838
Half Moon                    0.14 in    8529
Big Piney Airport (ASOS)     0.13 in    6946
Pinedale 5 SE (COCO)         0.10 in    7144
Kendall RS (SNO)             0.10 in    7740
Pinedale 1 NNW (COCO)        0.06 in    7213
Boulder (COOP)               0.06 in    6940
Hoback                       0.06 in    6726
Pinedale 13 SE               0.05 in    7050
Boulder (CWOP)               0.04 in    7338
Pinedale 14 NW (COCO)        0.02 in    7464
Cora 14.2 N (COCO)           0.02 in    7740
Snider Basin                 0.02 in    8200

...Sweetwater County...
Rock Springs 7.2 SSE         0.19 in    6760
Snows Springs                0.16 in    7549
Rock Springs Airport (ASOS)  0.10 in    6759
Lonetree 9.4 E (COCO)        0.05 in    7172
Green River (COOP)           0.05 in    6160
Manila 2 NE (USGS)           0.05 in    6060
Green River 2 SSE (COCO)     0.03 in    6209
Green River 1 SE (COCO)      0.02 in    6176
Green River 0.8 SSW (COCO)   0.02 in    6314
Rock Springs (CWOP)          0.02 in    6432
Green River 0.5 NNW (COCO)   0.01 in    6185
Rock Springs 1.6 W (COCO)    0.01 in    6397
Mckinnon (CWOP)              0.01 in    7086

...Teton County...
Base Camp (SNO)              0.50 in    7029
Thumb Divide (SNO)           0.30 in    7979
Moran 2 (CWOP)               0.24 in    6748
Gros Ventre Summit (SNO)     0.20 in    8750
Burro Hill                   0.18 in    7250
Togwotee Mtn Lodge (BTAC)    0.15 in    9190
Grand Teton                  0.15 in    6729
Teton Village 2 NE (COCO)    0.12 in    6339
Jackson Dam (HADS)           0.11 in    6776
YNP S Entrance 5 SSW (HADS)  0.11 in    7020
Wilson 3 SSW (COCO)          0.10 in    7010
Base (JHMR)                  0.10 in    6611
YNP S Entrance (HADS)        0.09 in    6898
Rendezvous Bowl (JHMR)       0.07 in    9634
Moran 1 (CWOP)               0.07 in    6867
Bechler Ranger Station       0.06 in    6432
YNP S Entrance 3 W (HADS)    0.05 in    7040
Bechler                      0.05 in    6399
Yellowstone Lake (ASOS)      0.05 in    7835
Old Faithful (HADS)          0.04 in    7319
Raymer (JHMR)                0.04 in    9657
Jackson (COOP)               0.03 in    6210
Mid Mtn (JHMR)               0.02 in    8225
B-T Portable No. 1           0.02 in    6631
Alta (CWOP)                  0.02 in    6460
Jackson 12 NE (COCO)         0.01 in    6663
Jackson Airport (AWOS)       0.01 in    6450
Coyote Meadows               0.01 in    6830

...Washakie County...
Worland Airport (ASOS)       0.73 in    4226
Worland 8 SW (COCO)          0.65 in    4136
Worland 14.4 SW (COCO)       0.60 in    4216
Split Rock Creek             0.60 in    6554
Pistol Draw                  0.55 in    4520
Worland (AWS)                0.49 in    4400
Ten Sleep 27 S (COCO)        0.29 in    5002
Worland 2.3 NE (COCO)        0.23 in    4107
Worland (CWOP)               0.23 in    4064
Leigh Creek                  0.18 in    8202
Ten Sleep 5 NNW (COCO)       0.17 in    4531
Ten Sleep 2 SE (HADS)        0.09 in    4418
Worland 9.6 N (COCO)         0.05 in    4043
Ten Sleep 0.3 SSW (COCO)     0.02 in    4426
Worland (COOP)               0.02 in    4058

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.

$$



                

 Top Menu

 

Summary | Forecast | Observed Snow and WindTravel Center | Monitoring & Reporting | Safety

Current Radar & Web Cams - Click Thumbnails To Enlarge
Northern Rockies Radar
Riverton Radar
Pocatello
Billings
Salt Lake
Cheyenne

 

 

 Road Conditions and Web Cameras
click the WYDOT Logo for road conditions
Teton Pass - Hwy 22
Alpine Junction - U.S. Hwy 26/89/191
Jackson
Bondurant - U.S. Hwy 189
Togwotee Pass - U.S. Hwy 26
Dubois
Granite Pass - U.S. Hwy 14
Powder River Pass - U.S. Hwy 16
South Pass - Hwy 28
Salt River Pass
Buffalo - I-25/I-90 Interchange
Casper Mountain
I-80 - Little America
Beaver Rim - U.S. Hwy 287
I-80 - Rock Springs
I-80  - Laramie


                                                                       Click Here to See All Webcams                                                  

If you plan to travel, we recommend checking road conditions along your route and staying on top of road closures here. If you are on Twitter, follow the hashtag: #WyoRoad (or look below) for the latest weather affecting roads and road conditions in and around Wyoming. 

 

Get the play-by-play on this storm and contribute your own snow reports to #wywx

Follow Us on Twitter @NWSRiverton

 

 

 Summary | Forecast | Observed Snow and WindTravel Center | Monitoring & Reporting | Safety

PLEASE SEND US YOUR SNOW REPORTS (CLICK HERE)

Monitor our Weather Summary Page for current Warnings, Watches, and Advisories. What's the difference?
Current            Weather Story Check the latest Weather Story graphic for an overview of the area forecast.
NWS Riverton Radar Check out what's on the radar.
Riverton | Pocatello | Cheyenne | Billings | Salt Lake City | Rapid City | Mosaic
Submit storm reports/images and keep up to date with us on Facebook!
Submit storm reports/images and keep up to date with us on Twitter!
Other reporting methods include email (nws.riverton@noaa.gov), or by phone at 1-800-211-1448.
Check the latest Public Information Statement for the latest storm reports.
WyDoT's Webpage Monitor current road conditions by visiting the Wyoming Dept. of Transportation (WYDOT) or by calling 5-1-1.
Get current road conditions, web camera images, road alerts, and much more on your mobile device by downloading the Wyoming 511 Mobile App.

 

 

Top Menu

 Summary | Forecast | Observed Snow and WindTravel Center | Monitoring & Reporting | Safety

 

Winter Safety Kit      |      Winter Weather Safety

 


 

Learn more about the National Weather Service's efforts to build a Weather-Ready Nation!

 


 

 Top Menu