Severe · Flood WarningActive alert
Flood Warning issued September 20 at 10:02AM CDT until September 23 at
Affecting Johnson, IA; Louisa, IA; Washington, IA
In effect until: Sep 21, 2026, 3:15 PM
Johnson, IA; Louisa, IA; Washington, IA
Confirmed across 3 counties in IA; expires 3:15 PM.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. The next statement will be issued by Monday morning.
Read the original bulletin (official text)
...The Flood Warning is extended for the following rivers in Iowa... Iowa River near Lone Tree affecting Louisa, Washington and Johnson Counties. * WHAT...Minor flooding is forecast. * WHERE...Iowa River near Lone Tree. * WHEN...Until Wednesday 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 Sunday the stage was 15.7 feet and rising. - Forecast...The river will rise above flood stage this afternoon to 16.8 feet this evening. It may fall briefly, but likely to rise again Monday night into Tuesday to 17.5 feet. It will then fall below flood stage Wednesday. - Flood stage is 16.0 feet.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™