Tornado Warning Issued for Clay and Union Counties in South Dakota
This alert is no longer in effect.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 Tornado Warning for east central Clay County and northwestern Union County until 10:00 PM CDT on May 31.
Read this weather record in 30 seconds
- Record type
- Tornado Warning
- Affected area
- Southeastern South Dakota
- Issued
- June 16, 2026
- Issuing authority
- NWS Sioux Falls SD
Tornado warnings are short-window notices for the named area. The issuing office is the authority on whether the warning remains active or has been replaced.
Record status: historical. It was issued 2 months ago; use the issuing agency's live warning service for current conditions in Southeastern South Dakota.
Alert Details
Tornado Warning issued by NWS Sioux Falls SD. Effective from 9:11 PM CDT May 31, 2026 until 10:00 PM CDT May 31, 2026. Event code: TOW. Severity: Extreme. Urgency: Immediate. Certainty: Observed.
Affected Areas
East central Clay County in southeastern South Dakota. Northwestern Union County in southeastern South Dakota. Storm located 7 miles west of Union Grove State Park or 10 miles north of Vermillion.
What You Should Do
TAKE COVER NOW! Move to a basement or an interior room on the lowest floor of a sturdy building. Avoid windows. If you are outdoors, in a mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris.
Expected Conditions
Tornado and half dollar size hail (1.25 inches). Radar indicated rotation. Storm moving east at 10 mph.
Timeline
Alert effective May 31 at 9:11 PM CDT. Expires May 31 at 10:00 PM CDT. Storm will be near Union Grove State Park around 9:15 PM CDT.
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 (974 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to June 16, 2026.
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