Illinois Flood Watch | Effective 05/18/2026 09:22

Headline: 
Flood Watch issued May 18 at 11:22AM CDT until May 18 at 7:00PM CDT by NWS St Louis MO
Event: 
Flood Watch
Urgency: 
Future
Effective: 
May 18, 2026 - 9:22am
Expires: 
May 18, 2026 - 5:00pm
Description: 
* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of south central Illinois, including the following areas, Bond IL, Clinton IL, Fayette IL, Marion IL and Washington IL. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Potential rainfall amounts of 1 to 2 inches, with localized higher amounts of 2 to 4 inches.
Instruction: 
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Area Description: 
Bond; Fayette; Clinton; Marion; Washington
Forcast Office: 
NWS St Louis MO
Sender: 
w-nws.webmaster@noaa.gov