Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding.
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LOADING...
Western and Central Wyoming
Weather Forecast Office
Winter Storm Impacting the West through Wednesday, High Wind in Central Wind Corridor
SYNOPSIS: Ongoing Light to occasional moderate snow over portions of western Wyoming is expected to continue this evening with a mix of rain and snow below 7000 feet. A strong cold front will push across Western Wyoming late tonight into early Wednesday morning with a 3 to 6 hour time frame when snowfall rates around an inch an hour could occur especially over far western Wyoming. Snow levels will also drop to valley floors with frontal passage. This strong cold front will push across the rest of the Cowboy State Wednesday bringing much colder temperatures along with some light to moderate snowfall. The winter storm comes to an end from northwest to southeast Wednesday afternoon and evening. For snowfall amounts, please check out the graphics below.
Please monitor JHAVALANCHE.org if your plans include travel into the back country.
IMPACTS:
Snow causing slick road conditions across the west especially tonight and Wednesday. The rest of the area will see slick roads after frontal passage on Wednesday
High winds from southeast Fremont County into Natrona County including the Casper area will create a blowover risk for lightweight or high-profile vehicles through Tonight.
Cold and wet conditions could have a significant impact on young livestock especially in wake of the cold front Tonight and Wednesday.
Click Image To Enlarge Winter Weather Advisory and Winter Storm Warning across
western Wyoming in effect through Noon Wednesday. High Wind Warning in effect through midnight Tonight.
Snow Forecasts
Model Forecast of Hourly Precipitation
Darker Blues indicate heavier snow Click Image To Enlarge
Forecast Snowfall
Tonight thru Wednesday Evening Click Image To Enlarge
Wednesday's Forecast Peak Wind Gusts Click Image To Enlarge
High Temperature Forecasts
Today's High Temperature Click Image To Enlarge
Wednesday's High Temperature Click Image To Enlarge
Snow Totals and Wind Reports will be posted and updated here once the storm occurs
(Please double check date and time of product)
047
NOUS45 KRIW 160051
PNSRIW
WYZ001>020-022>030-161245-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT SAT AUG 15 2026
...SUMMARY...
THE WEATHER PATTERN ALLOWED FOR MONSOONAL MOISTURE TO PUSH INTO
WYOMING EARLIER THIS WEEK. AS A RESULT OF THIS INCREASED MOISTURE
NUMEROUS RAIN SHOWERS AND THUNDERSTORMS DEVELOPED BEGINNING
WEDNESDAY AFTERNOON. CASPER ENDED UP WITH SOME IMPRESSIVE RAIN
TOTALS, MAINLY FROM MULTIPLE ROUNDS OF STORMS THURSDAY. OVERALL,
THIS ENDED UP BEING DECENT RAIN FOR MOST OF WESTERN AND CENTRAL
WYOMING.
...PRECIPITATION REPORTS...
LOCATION AMOUNT TIME/DATE ELEVATION (FT.)
...WYOMING...
...BIG HORN COUNTY...
COWLEY 0.3 NNE (COCO) 0.24 IN 0700 AM 08/15 4016
LOVELL 0.4 NNW (COCO) 0.19 IN 0700 AM 08/15 3626
DEAVER (COOP) 0.18 IN 0800 AM 08/15 4105
LOVELL 0.14 IN 0700 AM 08/15 3848
LOVELL 0.5 ESE (COCO) 0.13 IN 1005 AM 08/15 3829
BYRON 2.9 WSW (COCO) 0.12 IN 0700 AM 08/15 4040
GREYBULL AIRPORT (ASOS) 0.09 IN 0553 PM 08/15 3934
...FREMONT COUNTY...
PAVILLION 4 E (COCO) 0.64 IN 0700 AM 08/15 5353
LANDER 2 NNW (COCO) 0.38 IN 0700 AM 08/15 5352
LANDER AIRPORT (ASOS) 0.34 IN 0553 PM 08/15 5587
LANDER 4 WSW (COCO) 0.30 IN 0800 AM 08/15 5768
LANDER 7 WNW (COCO) 0.25 IN 0700 AM 08/15 6042
RIVERTON 2.2 WSW (COCO) 0.21 IN 0700 AM 08/15 5033
LANDER 5.9 SSE (COCO) 0.20 IN 0700 AM 08/15 5556
LANDER 9 SSE (COCO) 0.20 IN 0700 AM 08/15 5818
RIVERTON 1.9 W (COCO) 0.20 IN 0800 AM 08/15 5123
LANDER 5.1 SW (COCO) 0.18 IN 0700 AM 08/15 5980
LANDER 6 SW (COCO) 0.18 IN 0700 AM 08/15 6088
RIVERTON AIRPORT (ASOS) 0.17 IN 0553 PM 08/15 5443
PAVILLION 5.8 E (COCO) 0.07 IN 0700 AM 08/15 5322
RIVERTON (COOP) 0.06 IN 0700 AM 08/15 4955
...HOT SPRINGS COUNTY...
THERMOPOLIS 15.8 WNW (COCO) 0.78 IN 0800 AM 08/15 5164
THERMOPOLIS 18.6 E (COCO) 0.55 IN 0800 AM 08/15 4879
LUCERNE (COOP) 0.42 IN 0700 AM 08/15 4282
HOT SPRINGS AIRPORT (AWOS) 0.40 IN 0555 PM 08/15 4903
THERMOPOLIS 33.2 W (COCO) 0.39 IN 0700 AM 08/15 6612
THERMOPOLIS 2.8 SSW (COCO) 0.32 IN 0800 AM 08/15 4617
THERMOPOLIS 6 NNE (COCO) 0.19 IN 0700 AM 08/15 4434
THERMOPOLIS 10.7 N (COCO) 0.07 IN 0800 AM 08/15 4352
...JOHNSON COUNTY...
BUFFALO 13 SSE (COCO) 0.35 IN 0700 AM 08/15 4819
KAYCEE 14.6 W (COCO) 0.32 IN 0700 AM 08/15 5247
KAYCEE 10.9 WNW (COCO) 0.26 IN 0700 AM 08/15 5481
KAYCEE 17 NNW (COCO) 0.24 IN 0700 AM 08/15 5056
KAYCEE 5.2 NNW (COCO) 0.14 IN 0700 AM 08/15 4917
BUFFALO 0.6 E (COCO) 0.13 IN 0700 AM 08/15 4696
CLEARMONT 16 SE (COCO) 0.10 IN 0700 AM 08/15 3761
BUFFALO AIRPORT (ASOS) 0.02 IN 0553 PM 08/15 4925
...LINCOLN COUNTY...
SMOOT 5 SSE (COCO) 1.00 IN 0700 AM 08/15 7005
THAYNE 2 SE (COCO) 0.90 IN 0700 AM 08/15 6086
BEDFORD 1.8 S (COCO) 0.82 IN 0700 AM 08/15 6302
FOSSIL BUTTE (COOP) 0.80 IN 0400 PM 08/15 6785
STAR V RANCH 0.3 WNW (COCO) 0.73 IN 0800 AM 08/15 6253
STAR V RANCH 1 S (COCO) 0.70 IN 0730 AM 08/15 6204
ETNA 3.3 N (COCO) 0.44 IN 0800 AM 08/15 5989
ALPINE 5.9 S (COCO) 0.39 IN 0700 AM 08/15 5932
...NATRONA COUNTY...
CASPER AIRPORT (ASOS) 1.73 IN 0553 PM 08/15 5348
CASPER 1.7 W (COCO) 1.50 IN 0700 AM 08/15 5146
CASPER 1.2 E (COCO) 1.35 IN 0800 AM 08/15 5285
CASPER 0.7 WSW (COCO) 1.29 IN 0700 AM 08/15 5224
POWDER RIVER 0.1 NNE (COCO) 1.17 IN 0700 AM 08/15 5714
CASPER 1.5 SW (COCO) 1.05 IN 0700 AM 08/15 5406
CASPER 5 SSW (COCO) 1.03 IN 0700 AM 08/15 6262
MILLS 12.8 SSE (COCO) 0.84 IN 0700 AM 08/15 7940
CASPER 17.2 SW (COCO) 0.80 IN 0700 AM 08/15 5364
CASPER 6.6 S T IN 0800 AM 08/15 7978
...PARK COUNTY...
TOWER FALLS YNP (COOP) 0.94 IN 0800 AM 08/15 6275
PAHASKA (COOP) 0.74 IN 1134 AM 08/15 6692
MEETEETSE 4 NNE (COCO) 0.74 IN 0800 AM 08/15 5522
RALSTON 6 SW (COCO) 0.49 IN 0700 AM 08/15 4763
MEETEETSE 2 SE (COCO) 0.39 IN 0700 AM 08/15 6071
MEETEETSE 0.2 NE (COCO) 0.38 IN 0700 AM 08/15 5807
CODY (COOP) 0.32 IN 0857 AM 08/15 5280
CODY 7.3 SW (COCO) 0.32 IN 0700 AM 08/15 5419
CODY 2 WSW (COCO) 0.31 IN 0700 AM 08/15 5161
POWELL 4 WSW (COCO) 0.29 IN 0700 AM 08/15 4509
CLARK (COOP) 0.26 IN 0800 AM 08/15 4117
CODY 1 SE (COCO) 0.26 IN 0700 AM 08/15 5102
CODY 0.4 SE (COCO) 0.25 IN 0700 AM 08/15 5090
CODY 2.9 ESE (COCO) 0.23 IN 0700 AM 08/15 5093
CODY 4.3 NNE (COCO) 0.21 IN 0915 AM 08/15 5074
POWELL 0.5 WNW (COCO) 0.20 IN 0700 AM 08/15 4412
CODY AIRPORT (AWOS) 0.17 IN 0556 PM 08/15 5089
POWELL 3.9 ENE (COCO) 0.17 IN 0700 AM 08/15 4288
CODY 5.3 E (COCO) 0.14 IN 0700 AM 08/15 5081
CODY 21.9 W (COCO) 0.02 IN 1124 AM 08/15 5887
...SUBLETTE COUNTY...
DANIEL (COOP) 0.81 IN 0800 AM 08/15 7341
CORA 14.2 N (COCO) 0.64 IN 0700 AM 08/15 7740
PINEDALE 2 WSW (COCO) 0.48 IN 0800 AM 08/15 7302
BIG PINEY AIRPORT (ASOS) 0.44 IN 0553 PM 08/15 6946
PINEDALE 6.3 SE (COCO) 0.43 IN 0653 AM 08/15 7314
PINEDALE 1 NNW (COCO) 0.42 IN 0800 AM 08/15 7213
PINEDALE 0.3 SSW (COCO) 0.39 IN 0800 AM 08/15 7177
BOULDER (COOP) 0.37 IN 0800 AM 08/15 6940
...SWEETWATER COUNTY...
GREEN RIVER 0.8 SSW (COCO) 1.02 IN 0900 AM 08/15 6314
GREEN RIVER (COOP) 0.90 IN 0700 AM 08/15 6160
GREEN RIVER 0.5 NNW (COCO) 0.84 IN 0700 AM 08/15 6185
ROCK SPRINGS 4 NNW (COCO) 0.81 IN 0700 AM 08/15 6498
GREEN RIVER 1 SSE (COCO) 0.76 IN 0800 AM 08/15 6241
GREEN RIVER 1 SE (COCO) 0.67 IN 0700 AM 08/15 6176
LONETREE 9.4 E (COCO) 0.65 IN 0700 AM 08/15 7172
ROCK SPRINGS 6.7 WSW (COCO) 0.61 IN 0700 AM 08/15 6252
GREEN RIVER 2 SSE (COCO) 0.60 IN 0700 AM 08/15 6209
ROCK SPRINGS 1 SSE (COCO) 0.39 IN 0800 AM 08/15 6330
ROCK SPRINGS AIRPORT (ASOS) 0.28 IN 0554 PM 08/15 6759
ROCK SPRINGS 7.2 SSE 0.21 IN 0800 AM 08/15 6760
...TETON COUNTY...
YELLOWSTONE LAKE (ASOS) 1.56 IN 0556 PM 08/15 7835
BECHLER RANGER STATION 1.19 IN 0800 AM 08/15 6432
JACKSON (COOP) 0.94 IN 0900 AM 08/15 6210
JACKSON 0.3 ENE (COCO) 0.86 IN 0700 AM 08/15 6264
WILSON 1 SE (COCO) 0.80 IN 0700 AM 08/15 6155
TETON VILLAGE 2 NE (COCO) 0.64 IN 0700 AM 08/15 6339
JACKSON AIRPORT (AWOS) 0.59 IN 0556 PM 08/15 6450
MOOSE (COOP) 0.59 IN 0900 AM 08/15 6444
JACKSON 5 NW (COCO) 0.50 IN 0700 AM 08/15 6217
LAKE YELLOWSTONE (COOP) 0.40 IN 0715 AM 08/15 7892
JACKSON 12 NE (COCO) 0.36 IN 0952 AM 08/15 6663
...WASHAKIE COUNTY...
TEN SLEEP 2.3 ENE (COCO) 0.25 IN 0700 AM 08/15 4577
WORLAND 9.6 N (COCO) 0.23 IN 0700 AM 08/15 4043
WORLAND 2.3 NE (COCO) 0.20 IN 0700 AM 08/15 4107
TEN SLEEP 0.3 SSW (COCO) 0.20 IN 0700 AM 08/15 4426
WORLAND AIRPORT (ASOS) 0.19 IN 0553 PM 08/15 4226
WORLAND (COOP) 0.09 IN 0700 AM 08/15 4058
WORLAND 8 SW (COCO) 0.08 IN 0700 AM 08/15 4136
TEN SLEEP 5 NNW (COCO) 0.05 IN 0700 AM 08/15 4531
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.
$$
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.
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