Iowa Severe Flood Warning | Effective 06/18/2026 08:15

Headline: 
Flood Warning issued June 18 at 10:15AM CDT until June 20 at 6:00PM CDT by NWS Quad Cities IA IL
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
June 18, 2026 - 8:15am
Expires: 
June 19, 2026 - 8:15am
Description: 
...The Flood Warning continues for the following rivers in Iowa... Illinois... Wapsipinicon River near De Witt 4S affecting Scott and Clinton Counties. Iowa River at Oakville affecting Louisa County. La Moine River at Colmar affecting McDonough and Hancock Counties. ...The Flood Warning is extended for the following rivers in Iowa... Iowa River at Wapello affecting Louisa County. Iowa River near Lone Tree affecting Louisa, Johnson and Washington Counties. Iowa River at Marengo affecting Benton and Iowa Counties. English River at Kalona affecting Johnson and Washington Counties. * WHAT...Minor flooding is forecast. * WHERE...Iowa River near Lone Tree. * WHEN...From late tonight to Saturday evening. * IMPACTS...At 18.0 feet, Sand Road closes south of 520th Street to the Highway 22 intersection. * ADDITIONAL DETAILS... - At 9:00 AM CDT Thursday the stage was 15.5 feet and steady. - Forecast...The river is expected to rise above flood stage just after midnight tonight to a crest of 17.1 feet early tomorrow afternoon. It will then fall below flood stage late Saturday morning. - Flood stage is 16.0 feet.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. The next statement will be issued by this evening at 900 PM CDT.
Area Description: 
Johnson, IA; Louisa, IA; Washington, IA
Forcast Office: 
NWS Quad Cities IA IL