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Sioux County Sheriff's Office
Sunday May 17th, 2026 :: 05:56 p.m. CDT

Alert

Severe Thunderstorm Warning until 07:00PM

SVRFSD The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for... Southeastern Lyon County in northwestern Iowa... Southwestern Osceola County in northwestern Iowa... Northern Sioux County in northwestern Iowa... Northwestern O'Brien County in northwestern Iowa...

* Until 700 PM CDT.

* At 556 PM CDT, a severe thunderstorm was located over Doon, or 12 miles north of Sioux Center, moving east at 40 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees.

* This severe thunderstorm will be near... Hull and Doon around 600 PM CDT. George and Boyden around 605 PM CDT. Matlock around 610 PM CDT. Other locations in the path of this severe thunderstorm include Ashton and Melvin.

* AFFECTED AREAS: LYON, IA ... O'BRIEN, IA ... OSCEOLA, IA ... SIOUX, IA

Instructions:

For your protection move to an interior room on the lowest floor of a building. A Tornado Watch remains in effect until 1000 PM CDT for northwestern Iowa...and southeastern South Dakota.

Address/Location
Sioux County Sheriff's Office
4363 Ironwood Ave., Ste 1
Orange City, IA 51250

Contact
Emergency: 9-1-1
Non-emergencies: 712-737-3307

TEXT-A-TIP -  Text TIP SIOUX followed by your message, to 888777

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Alert Details

Severity:
Severe - Significant threat to life or property
Urgency:
Immediate - Responsive action SHOULD be taken immediately
Certainty:
Observed - Determined to have occurred or to be ongoing
Category:
Meteorological (inc. flood)
Event:
Severe Thunderstorm Warning

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