Illinois, Missouri Flash Flood Warning - Severe | Effective 06/01/2026 02:37

Headline: 
Flash Flood Warning issued June 1 at 4:37AM CDT until June 1 at 9:30AM CDT by NWS St Louis MO
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
June 1, 2026 - 2:37am
Expires: 
June 1, 2026 - 7:30am
Description: 
FFWLSX The National Weather Service in St Louis has issued a * Flash Flood Warning for... Central Calhoun County in southwestern Illinois... Southwestern Greene County in southwestern Illinois... Southwestern Jersey County in southwestern Illinois... Northeastern Lincoln County in east central Missouri... Southeastern Pike County in northeastern Missouri... * Until 930 AM CDT. * At 437 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. 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... Elsberry, Hardin, Fieldon, Batchtown, Hamburg, Paynesville, Annada and Nutwood. This includes the following State Parks... Mississippi River State Fish and Wildlife Area and Pere Marquette State Park. This includes the following streams and drainages... Sugar Creek, Otter Creek, Cole Creek, Page Branch, Camp Creek, Macoupin Creek, Michael Creek, Knox Branch, Old Kings Lake Creek, South Fork Otter Creek, Sandy Chute, Shelton Creek, Dry Fork, Ramsey Creek, Mississippi River, South Fork Guinns Creek, Guinns Creek, Illinois River, Possum Creek, Prairie Creek, Little Ramsey Creek and Bryants Creek.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Area Description: 
Calhoun, IL; Greene, IL; Jersey, IL; Lincoln, MO; Pike, MO
Forcast Office: 
NWS St Louis MO