Iowa Severe Severe Thunderstorm Warning | Effective 08/11/2026 05:39

Headline: 
Severe Thunderstorm Warning issued August 11 at 7:39AM CDT until August 11 at 8:00AM CDT by NWS Quad Cities IA IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
August 11, 2026 - 5:39am
Expires: 
August 11, 2026 - 6:00am
Description: 
At 738 AM CDT, a severe thunderstorm was located over Hopkinton, or 14 miles north of Anamosa, moving east at 60 mph. THIS IS A DESTRUCTIVE STORM FOR HOPKINTON. HAZARD...80 mph wind gusts. SOURCE...Radar indicated. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be heavily damaged. Expect considerable damage to roofs, windows, and vehicles. Extensive tree damage and power outages are likely. Locations impacted include... Manchester, Monticello, Hopkinton, Delhi, Ryan, Buck Creek, Baileys Ford Park, Jones County Fairgrounds, Turtle Creek Park, and Monticello Municipal Airport.
Instruction: 
This is an EXTREMELY DANGEROUS SITUATION with tornado like wind speeds expected. Mobile homes and high profile vehicles are especially susceptible to winds of this magnitude and may be overturned. For your protection move to an interior room on the lowest floor of a building. This storm has the potential to cause serious injury and significant property damage. Continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.
Area Description: 
Delaware, IA; Jones, IA; Linn, IA
Forcast Office: 
NWS Quad Cities IA IL
Sender: 
w-nws.webmaster@noaa.gov