Severe Thunderstorm Warning for IA, NE, SD Counties
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NWS Sioux Falls issued a Severe Thunderstorm Warning for parts of Iowa, Nebraska and South Dakota until 5:15 AM CDT August 12.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- Western Iowa, Northeastern Nebraska, Southeastern South Dakota
- Issued
- August 12, 2026
- Issuing authority
- NWS Sioux Falls SD
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
Severe Thunderstorm Warning issued by NWS Sioux Falls SD. Effective from August 12 at 4:16 AM CDT until August 12 at 5:15 AM CDT. Alert level: Severe. Certainty: Observed. Urgency: Immediate.
Affected Areas
Western Woodbury County in west central Iowa; Southwestern Plymouth County in northwestern Iowa; Dakota County in northeastern Nebraska; Dixon County in northeastern Nebraska; Southern Union County in southeastern South Dakota. Specific locations in path include Allen, Newcastle, Concord, Martinsburg, Dixon, Maskell, Ponca, Ponca State Park, Elk Point, Emerson, Jefferson, Hubbard, Jackson In Dakota County, Sioux City, North Sioux City, South Sioux City, Dakota City, Homer, Sergeant Bluff and Hinton.
What You Should Do
For your protection move to an interior room on the lowest floor of a building. To report severe weather, contact your nearest law enforcement agency.
Expected Conditions
At 4:16 AM CDT, severe thunderstorms were located along a line extending from near Maskell to near Dixon in Dixon County to near Wayne, moving east at 45 mph. Hazards include 60 mph wind gusts and quarter size hail (1.00 inch). Radar indicated. Hail damage to vehicles expected. Wind damage to roofs, siding, and trees expected.
Timeline
Warning in effect until 5:15 AM CDT on August 12, 2026.
Original source: NOAA Official Notice ↗
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