Severe Thunderstorm Watch — Johnson 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 5:02PM CDT until August 7 at 10:00PM CDT by NWS Quad Cities IA IL
SEVERE THUNDERSTORM WATCH 541 REMAINS VALID UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 12 COUNTIES IN EAST CENTRAL IOWA BENTON CEDAR IOWA JOHNSON JONES LINN MUSCATINE IN NORTHEAST IOWA BUCHANAN DELAWARE IN SOUTHEAST IOWA KEOKUK LOUISA WASHINGTON THIS INCLUDES THE CITIES OF ANAMOSA, CEDAR RAPIDS, INDEPENDENCE, IOWA CITY, MANCHESTER, MARENGO, MUSCATINE, SIGOURNEY, TIPTON, VINTON, WAPELLO, AND WASHINGTON.
Effective August 7, 2026 at 6:02 PM ET · Expires August 7, 2026 at 11:00 PM ET
Event Details
Event Type
Severe Thunderstorm Watch
Severity
severe
Issued By
NWS Quad Cities IA IL
Expires
August 7, 2026 at 11:00 PM ET
Last Checked
2 minutes ago
Also In Effect For
This same Severe Thunderstorm Watch also covers:
Other Active Alerts in Iowa
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Tornado Warning
Tornado Warning
Severe Thunderstorm Watch
Tornado Warning
Get Severe Thunderstorm Watch Alerts for Johnson 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 Johnson 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 (2 minutes ago). It's set to expire August 7, 2026 at 11:00 PM ET.
How do I get notified about Severe Thunderstorm Watch alerts for Johnson County?
Download StormCast free on Google Play and set Johnson 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 Buchanan County, Keokuk County, Washington County, Linn County, Louisa County, Benton County, Delaware County, Iowa County, Muscatine County, Cedar County, Jones County.