Severe Thunderstorm Warning Issued for Iowa and South Dakota Counties
This alert is no longer in effect.
NOAA issued it on June 16, 2026, 2 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Sioux Falls has issued a Severe Thunderstorm Warning for parts of northwestern Iowa and southeastern South Dakota until midnight CDT.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- Northwestern Iowa and Southeastern South Dakota
- Issued
- June 16, 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: historical. It was issued 2 months ago; use the issuing agency's live warning service for current conditions in Northwestern Iowa and Southeastern South Dakota.
Alert Details
A Severe Thunderstorm Warning was issued by the National Weather Service in Sioux Falls SD on May 31 at 11:08 PM CDT. The alert is effective from 2026-05-31T23:08:00-05:00 until 2026-06-01T00:00:00-05:00.
Affected Areas
The warning covers Northwestern Woodbury County in west central Iowa, Southwestern Plymouth County in northwestern Iowa, and Southeastern Union County in southeastern South Dakota. The storm was located near Jefferson, 11 miles north of Sioux City, and will be near Sioux City and Hinton around 1115 PM CDT and Merrill around 1120 PM CDT.
What You Should Do
Remain alert for a possible tornado. If you spot a tornado, go at once into the basement or small central room in a sturdy structure. Move to an interior room on the lowest floor of a building for protection.
Expected Conditions
A severe thunderstorm with quarter size hail (1.00 inch) and wind gusts up to 50 MPH was indicated by radar. Damage to vehicles is expected. Tornadoes are possible.
Timeline
The warning is in effect until midnight CDT on June 1.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,068 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to June 16, 2026.
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Common questions about this NWS weather alert.