Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

SYNOPSIS: A winter storm with significant continue to impact western Wyoming today. Snow showers will gradually shift east of the Divide today. Snow showers could be heavy at times. The most snowfall, east of the Divide, will probably occur in the Cody Foothills where several inches of snow is expected. Snow showers moving over the same area, could bring localized heavier snow east of the Divide. Snow will taper off from west to east late Sunday afternoon and evening.

IMPACTS:

Western Wyoming

Snowy and slick roads continue today and tonight
Reduced visibility in heavier snow

Interstate 80 Corridor in Sweetwater County & East of the Divide

Snow or slushy roads developing today and this evening in many locations
Severely reduced visibility in heavier snow
Significant blowing snow developing along Interstate 80 as strong west winds develop in wake of a cold front

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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	What's a "Watch?"

**Quick View of Hazards, Forecast Snowfall**

Click Image To Enlarge Winter Weather Advisory across western Wyoming and Cody Foothills until 5 PM Sunday.	Click Image To Enlarge Weather model simulation of snow development across the area from 8 AM Sunday until Midnight Sunday night. Heavier snow depicted in darker blue shades.

**Current Radar and Snowfall Forecast**

Click Image To Enlarge Heavier areas of snow in darker blues and green colors.	Click Image To Enlarge Forecast snowfall today and tonight.

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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)
178 NOUS45 KRIW 140246 PNSRIW WYZ001>020-022>030-141446- Public Information Statement National Weather Service Riverton WY 846 PM MDT Wed May 13 2026 ...HIGHEST WIND REPORTS... Location Speed Time/Date Lat/Lon WY28 Red Canyon (DOT) 86 MPH 0522 PM 05/13 42.62N/108.61W Dickinson (PC) 66 MPH 0450 PM 05/13 42.35N/109.03W US20 Natrona (DOT) 65 MPH 0352 PM 05/13 43.03N/106.80W Lander Airport (ASOS) 64 MPH 0526 PM 05/13 42.82N/108.73W Cottonwood Merna (PC) 63 MPH 0440 PM 05/13 42.86N/110.30W Boysen Peak (AWOS) 63 MPH 0615 PM 05/13 43.47N/108.23W I-80 Tipton (DOT) 62 MPH 0152 PM 05/13 41.63N/108.30W Big Piney Airport (ASOS) 62 MPH 0417 PM 05/13 42.58N/110.10W WY258 Outer Drive (DOT) 62 MPH 0442 PM 05/13 42.81N/106.31W Dubois Airport (AWOS) 62 MPH 0135 PM 05/13 43.55N/109.68W Anderson Ridge 62 MPH 0550 PM 05/13 42.44N/108.95W Rock Springs Airport (ASOS) 61 MPH 0408 PM 05/13 41.60N/109.07W Horse Ranch Creek (PC) 61 MPH 0430 PM 05/13 43.18N/106.34W US20 Hiland (DOT) 60 MPH 0417 PM 05/13 43.09N/107.32W Jackson Airport (AWOS) 59 MPH 0538 PM 05/13 43.61N/110.73W WY120 Meeteetse Rim (DOT) 59 MPH 0246 PM 05/13 44.27N/108.87W Riverton Airport (ASOS) 59 MPH 0551 PM 05/13 43.07N/108.47W Wyopo (PC) 58 MPH 0520 PM 05/13 42.85N/108.68W 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. $$

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

                        
178
NOUS45 KRIW 140246
PNSRIW
WYZ001>020-022>030-141446-

Public Information Statement
National Weather Service Riverton WY
846 PM MDT Wed May 13 2026

...HIGHEST WIND REPORTS...

Location                     Speed     Time/Date       Lat/Lon
WY28 Red Canyon (DOT)        86 MPH    0522 PM 05/13   42.62N/108.61W
Dickinson (PC)               66 MPH    0450 PM 05/13   42.35N/109.03W
US20 Natrona (DOT)           65 MPH    0352 PM 05/13   43.03N/106.80W
Lander Airport (ASOS)        64 MPH    0526 PM 05/13   42.82N/108.73W
Cottonwood Merna (PC)        63 MPH    0440 PM 05/13   42.86N/110.30W
Boysen Peak (AWOS)           63 MPH    0615 PM 05/13   43.47N/108.23W
I-80 Tipton (DOT)            62 MPH    0152 PM 05/13   41.63N/108.30W
Big Piney Airport (ASOS)     62 MPH    0417 PM 05/13   42.58N/110.10W
WY258 Outer Drive (DOT)      62 MPH    0442 PM 05/13   42.81N/106.31W
Dubois Airport (AWOS)        62 MPH    0135 PM 05/13   43.55N/109.68W
Anderson Ridge               62 MPH    0550 PM 05/13   42.44N/108.95W
Rock Springs Airport (ASOS)  61 MPH    0408 PM 05/13   41.60N/109.07W
Horse Ranch Creek (PC)       61 MPH    0430 PM 05/13   43.18N/106.34W
US20 Hiland (DOT)            60 MPH    0417 PM 05/13   43.09N/107.32W
Jackson Airport (AWOS)       59 MPH    0538 PM 05/13   43.61N/110.73W
WY120 Meeteetse Rim (DOT)    59 MPH    0246 PM 05/13   44.27N/108.87W
Riverton Airport (ASOS)      59 MPH    0551 PM 05/13   43.07N/108.47W
Wyopo (PC)                   58 MPH    0520 PM 05/13   42.85N/108.68W

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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Current Radar & Web Cams - Click Thumbnails To Enlarge

Northern Rockies Radar	Riverton Radar

Pocatello	Billings

Salt Lake	Cheyenne

Road Conditions and Web Cameras

Teton Pass - Hwy 22	Alpine Junction - U.S. Hwy 26/89/191	Jackson	Togwotee Mountain Lodge

Togwotee Pass - U.S. Hwy 26	Dubois	Granite Pass - U.S. Hwy 14	Powder River Pass - U.S. Hwy 16

South Pass - Hwy 28	Cody	Buffalo - I-25/I-90 Interchange	Casper Mountain

Casper	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.

Tweets by @NWSRiverton	#WyoRoad Tweets
Get the play-by-play on this storm and contribute your own snow reports to #wywx Follow Us on Twitter @NWSRiverton	On the road? Tweet road conditions to #WyoRoad!

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