Illinois Severe Flash Flood Warning | Effective 06-21-2026 18:27

Headline: 
Flash Flood Warning issued June 21 at 8:27PM CDT until June 21 at 10:00PM CDT by NWS St Louis MO
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
June 21, 2026 - 6:27pm
Expires: 
June 21, 2026 - 8:00pm
Description: 
FFWLSX The National Weather Service in St Louis has extended the * Flash Flood Warning for... Northern Marion County in south central Illinois... * Until 1000 PM CDT. * At 827 PM CDT, Doppler radar indicated thunderstorms produced heavy rain across the warned area. Between 4 and 5 inches of rain have fallen. Life threatening flash flooding is ongoing. HAZARD...Life threatening flash flooding. Thunderstorms produced flash flooding. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Kinmundy, Patoka, Farina, Omega, Stephen Forbes Station, Fairman, Alma, Vernon and Brubaker. This includes the following State Parks... Stephen A. Forbes State Recreation Area. This includes Interstate 57 in Illinois near exit 127. This includes the following streams and drainages... Louse Run, Crooked Creek, Davidson Creek, Skillet Fork, Crabapple Branch, Bee Branch, Wills Creek, Brubaker Creek, Barden Creek, Warren Branch, Flat Creek, Kaskaskia River, Lost Fork, Bear Creek, Town Creek, Schneider Springs Branch, Jims Creek, Dums Creek and East Fork Kaskaskia River.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
SNM: AVISO DE INUNDACIONES REPENTINAS hasta 10:00 PM CDT. Evite areas inundadas.
Servicio Nacional de Meteorologia: AVISO DE INUNDACIONES REPENTINAS en efecto para esta area hasta las 10:00 PM CDT. Esta es una situacion peligrosa y amenaza la vida. No intente viajar a menos que sea para abandonar un area propensa a inundaciones o bajo una orden de desalojo.
Area Description: 
Marion, IL
Forcast Office: 
NWS St Louis MO