Iowa, Illinois Severe Flood Watch | Effective 09/19/2026 18:00

Headline: 
Flood Watch issued September 19 at 8:00PM CDT until September 20 at 7:00AM CDT by NWS Quad Cities IA IL
Event: 
Flood Watch
Urgency: 
Future
Effective: 
September 19, 2026 - 6:00pm
Expires: 
September 20, 2026 - 5:00am
Description: 
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of northwest Illinois, including the following counties, Carroll, Jo Daviess, Mercer, Rock Island, Stephenson and Whiteside and Iowa, including the following counties, Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque, Iowa, Jackson, Johnson, Jones, Linn, Louisa, Muscatine, Scott and Washington. * WHEN...Until 7 AM CDT Sunday. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Widespread showers and storms are expected to develop again this evening and last into Sunday. These storms will be capable of rainfall rates between 1 to 2 inches per hour. Rainfall totals of 1 to 3 inches are likely in the hardest hit areas tonight, with the potential for localized areas of 3+ inches.
Instruction: 
You should monitor later forecasts and be alert for possible Flash Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Area Description: 
Buchanan; Delaware; Dubuque; Benton; Linn; Jones; Jackson; Iowa; Johnson; Cedar; Clinton; Muscatine; Scott; Washington; Louisa; Jo Daviess; Stephenson; Carroll; Whiteside; Rock Island; Mercer
Forcast Office: 
NWS Quad Cities IA IL
Sender: 
w-nws.webmaster@noaa.gov