Illinois Flash Flood Warning | Effective 05/18/2026 11:44

Headline: 
Flash Flood Warning issued May 18 at 1:44PM CDT until May 18 at 6:00PM CDT by NWS Lincoln IL
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
May 18, 2026 - 11:44am
Expires: 
May 18, 2026 - 4:00pm
Description: 
FFWILX The National Weather Service in Lincoln has issued a * Flash Flood Warning for... Northern Clay County in south central Illinois... Southern Effingham County in south central Illinois... Western Jasper County in southeastern Illinois... * Until 600 PM CDT. * At 144 PM CDT, emergency management reported thunderstorms producing heavy rain across the warned area. Between 2 and 3 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Emergency management reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Louisville, Watson, Dieterich, Edgewood, Mason, Bible Grove, Wheeler, Sailor Springs, Iola, Rose Hill, Hord and Ingraham.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Area Description: 
Clay, IL; Effingham, IL; Jasper, IL
Forcast Office: 
NWS Lincoln IL