Severe Thunderstorm Warning: O'Brien, Sioux Counties until 10:15 PM CDT
A Severe Thunderstorm Warning is in effect for O'Brien and Sioux Counties, Iowa, until 10:15 PM CDT tonight, October 8, 2026; residents should seek immediate shelter due to quarter-size hail.
Residents in O'Brien and Sioux Counties, Iowa, are advised to seek immediate shelter indoors due to a Severe Thunderstorm Warning issued by the National Weather Service (NWS) Sioux Falls SD. The warning is in effect until 10:15 PM CDT tonight, October 8, 2026.
At 9:41 PM CDT, a severe thunderstorm was located over Alton, or near Orange City, moving east at 35 mph. This storm is capable of producing quarter-size hail. Damage to vehicles is expected.
The NWS reports the severe thunderstorm will be near Alton and Orange City around 9:45 PM CDT, and Granville around 9:50 PM CDT.
Instructions: Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail.
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