Illinois Severe Thunderstorm Warning | Effective 05/18/2026 07:40

Headline: 
Severe Thunderstorm Warning issued May 18 at 9:40AM CDT until May 18 at 10:00AM CDT by NWS Lincoln IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 18, 2026 - 7:40am
Expires: 
May 18, 2026 - 8:00am
Description: 
At 940 AM CDT, a severe thunderstorm was located near Flanagan, or 15 miles south of Streator, moving northeast at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. This severe thunderstorm will remain over mainly rural areas of southeastern Marshall, northeastern Woodford and northwestern McLean Counties. This includes Interstate 39 between mile markers 23 and 26.
Instruction: 
For your protection move to an interior room on the lowest floor of a building.
Area Description: 
McLean, IL; Marshall, IL; Woodford, IL
Forcast Office: 
NWS Lincoln IL