Illinois Severe Thunderstorm Warning | Effective 05/16/2026 13:37

Headline: 
Severe Thunderstorm Warning issued May 16 at 3:37PM CDT until May 16 at 4:00PM CDT by NWS St Louis MO
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 16, 2026 - 1:37pm
Expires: 
May 16, 2026 - 2:00pm
Description: 
At 337 PM CDT, a severe thunderstorm was located 6 miles south of Mascoutah, moving east at 20 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. This severe thunderstorm will be near... Mascoutah and Freeburg around 340 PM CDT. New Baden around 355 PM CDT. Other locations impacted by the severe thunderstorm include Fayetteville and St. Libory. This includes the following State Parks... Peabody-River King State Fish and Wildlife Area. This includes Interstate 64 in Illinois near exit 27.
Instruction: 
Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. Tornadoes can develop quickly from severe thunderstorms. Seek shelter immediately in an interior room on the lowest floor of a well-built structure.
Area Description: 
St. Clair, IL
Forcast Office: 
NWS St Louis MO