Iowa Severe Severe Thunderstorm Warning | Effective 06/17/2026 04:26
At 626 AM CDT, a severe thunderstorm was located over Grinnell<br />
Regional Airport, or near Grinnell, moving southeast at 50 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...<br />
Newton, Grinnell, Montezuma, Rock Creek Lake, Kellogg, Lynnville,<br />
Malcom, Deep River, Barnes City, Oakland Acres, Searsboro, Guernsey,<br />
Grinnell Regional Airport, and Rock Creek State Park.
This includes Interstate 80 between mile markers 171 and 198.<br />