Severe Thunderstorm Watch — Grundy County, Iowa
Conditions favor the development of severe thunderstorms in and near the watch area.
Current Status
⛈️ Active: Severe Thunderstorm Watch
Severe Thunderstorm Watch issued August 7 at 4:26PM CDT until August 7 at 10:00PM CDT by NWS Des Moines IA
SEVERE THUNDERSTORM WATCH 541 REMAINS VALID UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 22 COUNTIES IN CENTRAL IOWA BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA WEBSTER IN NORTH CENTRAL IOWA BUTLER FRANKLIN HUMBOLDT WRIGHT IN NORTHEAST IOWA BLACK HAWK BREMER IN SOUTH CENTRAL IOWA MADISON MAHASKA MARION WARREN THIS INCLUDES THE CITIES OF ACKLEY, ADEL, ALLISON, AMES, APLINGTON, BELMOND, BOONE, CARLISLE, CEDAR FALLS, CLARION, CLARKSVILLE, CONRAD, DES MOINES, DIKE, DUMONT, DYSART, EAGLE GROVE, EARLHAM, ELDORA, FORT DODGE, GLADBROOK, GREENE, GRINNELL, GRUNDY CENTER, HAMPTON, HUMBOLDT, INDIANOLA, IOWA FALLS, KNOXVILLE, MARSHALLTOWN, NEWTON, NORWALK, OSKALOOSA, PARKERSBURG, PELLA, PERRY, REINBECK, SHELL ROCK, TAMA, TOLEDO, TRAER
Effective August 7, 2026 at 5:26 PM ET · Expires August 7, 2026 at 11:00 PM ET
Event Details
Event Type
Severe Thunderstorm Watch
Severity
severe
Issued By
NWS Des Moines IA
Expires
August 7, 2026 at 11:00 PM ET
Last Checked
just now
Also In Effect For
This same Severe Thunderstorm Watch also covers:
Other Active Alerts in Iowa
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Severe Thunderstorm Watch
Get Severe Thunderstorm Watch Alerts for Grundy County
StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
Frequently Asked Questions
What does a Severe Thunderstorm Watch mean for Grundy County, Iowa?
Conditions favor the development of severe thunderstorms in and near the watch area.
Is this Severe Thunderstorm Watch currently active?
Yes — this alert is active as of our last check (just now). It's set to expire August 7, 2026 at 11:00 PM ET.
How do I get notified about Severe Thunderstorm Watch alerts for Grundy County?
Download StormCast free on Google Play and set Grundy County, Iowa as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Severe Thunderstorm Watch is also in effect for Tama County, Boone County, Bremer County, Franklin County, Hardin County, Humboldt County, Jasper County, Madison County, Poweshiek County, Story County, Black Hawk County, Mahaska County, Dallas County, Wright County, Polk County, Marion County, Marshall County, Butler County, Hamilton County, Warren County, Webster County.