Wyoming Moderate Special Weather Statement | Effective 09/17/2026 23:54

Headline: 
Special Weather Statement issued September 18 at 12:54AM MDT by NWS Riverton WY
Event: 
Special Weather Statement
Urgency: 
Expected
Effective: 
September 17, 2026 - 11:54pm
Expires: 
September 18, 2026 - 12:45am
Description: 
At 1254 AM MDT, Doppler radar was tracking a strong thunderstorm near Palisades Reservoir, moving northeast at 35 mph. HAZARD...Wind gusts up to 40 mph and penny inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Rafter J Ranch and Jackson.
Instruction: 
If outdoors, consider seeking shelter inside a building. Torrential rainfall is also occurring with this storm and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle.
Area Description: 
Teton and Gros Ventre Mountains; Jackson Hole; Star Valley
Forcast Office: 
NWS Riverton WY
Sender: 
w-nws.webmaster@noaa.gov