Waterloo, Iowa – Strong to severe thunderstorms are sweeping across northeast Iowa this afternoon, bringing a risk of damaging winds and large hail until 4:30 p.m. Residents from Fort Dodge to Cedar Rapids are urged to take shelter as the storms move east.
The National Weather Service in La Crosse reports that a line of storms is rapidly progressing through the region, with gusts strong enough to cause tree damage and power outages. Quarter-size hail is also possible, posing a risk to vehicles and crops.
Mason City, Waterloo, and Cedar Rapids are in the highest impact zone. Outdoor events and travel plans should be postponed until the storms pass. Drivers on I-35, I-380, and U.S. Highway 20 should expect low visibility in heavy rain and hazardous crosswinds.
Residents are advised to stay indoors and away from windows. Those in campers or outdoor shelters should seek a sturdy building immediately. The threat of severe weather will decrease after 4:30 p.m., but additional advisories may be issued if storms redevelop.