06/11/2026
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Des Moines IA
744 AM CDT Thu Jun 11 2026
The National Weather Service in Des Moines has issued a
* Severe Thunderstorm Warning for...
Western Poweshiek County in central Iowa...
Eastern Polk County in central Iowa...
Eastern Story County in central Iowa...
Southeastern Hardin County in central Iowa...
Marshall County in central Iowa...
Northern Marion County in south central Iowa...
Western Tama County in central Iowa...
Northwestern Mahaska County in south central Iowa...
Southwestern Grundy County in central Iowa...
Jasper County in central Iowa...
* Until 830 AM CDT.
* At 744 AM CDT, severe thunderstorms were located along a line
extending from near Story City to Swan, moving east at 60 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Marshalltown, Newton, Grinnell, Nevada, Grundy Center,
Mitchellville, Colfax, Monroe, Prairie City, State Center, Conrad,
Baxter, Iowa Speedway, Meskwaki Casino, Rock Creek Lake, Gladbrook,
Le Grand, Maxwell, Colo, and Melbourne.
This includes Interstate 80 between mile markers 148 and 190.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
A Tornado Watch remains in effect until 300 PM CDT for central and
south central Iowa.
&&
LAT...LON 4150 9290 4142 9333 4149 9333 4148 9334
4148 9335 4221 9349 4221 9346 4222 9346
4246 9269 4150 9255
TIME...MOT...LOC 1244Z 259DEG 54KT 4219 9365 4145 9330
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH