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Severe Thunderstorm Warning: Seek Shelter Immediately in Cherokee, O'Brien, Plymouth, Sioux Counties

A Severe Thunderstorm Warning is in effect for Cherokee, O'Brien, Plymouth, and Sioux counties in Iowa until 2:45 AM CDT today, October 9; residents should seek immediate shelter due to the threat of half-dollar size hail.

Staff Writer
10/09/2026 · Le Mars edition

A Severe Thunderstorm Warning has been issued for Cherokee, O'Brien, Plymouth, and Sioux counties in Iowa, effective immediately until 2:45 AM CDT today, October 9.

Residents in the affected areas are advised to seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail, with half-dollar size hail being the primary hazard.

At 2:21 AM CDT, the National Weather Service Sioux Falls SD reported a severe thunderstorm located 6 miles southwest of Granville, or 8 miles southeast of Orange City. The storm is moving east at 30 mph.

Impacts from this storm are expected to include damage to vehicles due to the large hail. The thunderstorm is anticipated to be near Marcus around 2:35 AM CDT and Cleghorn around 2:40 AM CDT.

For your safety, move to an interior room on the lowest floor of a sturdy building. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Sioux Falls SD.

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