Headline:
Severe Thunderstorm Warning issued September 8 at 6:40PM CDT until September 8 at 7:00PM CDT by NWS Des Moines IA
Event:
Severe Thunderstorm Warning
Urgency:
Immediate
Effective:
September 8, 2026 - 4:40pm
Expires:
September 8, 2026 - 5:00pm
Description:
At 640 PM CDT, severe thunderstorms were located along a line
extending from near Rock Creek State Park to Swan, moving east at 40
mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Public.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Des Moines, West Des Moines, Ankeny, Johnston, Newton, Indianola,
Altoona, Pella, Grinnell, Norwalk, Pleasant Hill, Knoxville,
Carlisle, Bondurant, Saylorville, Mitchellville, Colfax, Monroe,
Pleasantville, and Prairie City.
This includes the following highways...
Interstate 35 between mile markers 87 and 101.
Interstate 80 between mile markers 132 and 183.
Interstate 235 between mile markers 5 and 14.
Instruction:
For your protection move to an interior room on the lowest floor of a
building.
Area Description:
Jasper, IA; Mahaska, IA; Marion, IA; Polk, IA; Poweshiek, IA; Warren, IA
Forcast Office:
NWS Des Moines IA
Sender:
w-nws.webmaster@noaa.gov