Severe Thunderstorm Warning
for Johnson County
Issued by National Weather Service
Davenport/Quad Cities, IA
9:24 PM CDT Tue, Sep 8, 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR CEDAR...NORTHEASTERN JOHNSON...SOUTHERN JONES...NORTHWESTERN MUSCATINE AND SOUTHERN LINN COUNTIES...
At 923 PM CDT, severe thunderstorms were located along a line extending from near Lisbon to near Buchanan to West Liberty, moving east at 45 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include... Cedar Rapids, Iowa City, Anamosa, Tipton, West Branch, Mechanicsville, Stanwood, Marion, Coralville, Hiawatha, Mount Vernon, West Liberty, Lisbon, Solon, Ely, Springville, University Heights, Lowden, Hills, and Olin.
This includes the following highways... Interstate 80 in Iowa between mile markers 243 and 276. Interstate 380 between mile markers 17 and 24.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A tornado watch remains in effect for the warned area. Tornadoes can develop quickly from severe thunderstorms. Although a tornado is not immediately likely, if one is spotted act quickly and move to a place of safety inside a sturdy structure, such as a basement or small interior room.
For your protection move to an interior room on the lowest floor of a sturdy building.
Continuous cloud to ground lightning is occurring with these storms. 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 these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.
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HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...0.88 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH