NWS Sioux Falls SDTO.W 0026May 31, 2026
Tornado Warning: Clay and Union, SD
The National Weather Service office in Sioux Falls issued a tornado warning for Clay and Union in South Dakota, which was in force until 10:00 p.m. local time on May 31. It was the 26th tornado warning the NWS office in Sioux Falls issued in 2026. South Dakota had 5 tornado warnings in May 2026, against 7 in an average May of 2008-2025 (South Dakota's tornado warnings by year).
ExpiredWarning
In force for 49 minutes; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Sioux Falls SD
- Area
- Clay and Union
- State
- South Dakota
- Level
- Warning
- Issued
- 9:11 p.m. CDT, May 31, 2026
- Expires
- 10:00 p.m. CDT, May 31, 2026
- CAP severity, certainty, urgency
- Extreme, Observed, Immediate
- VTEC event
- KFSD TO.W 0026
- Official source
- National Weather Service: the notice at its source
Tornado Warnings in South Dakota since 2008Every warning type in South Dakota
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
TORFSD The National Weather Service in Sioux Falls has issued a * Tornado Warning for... East central Clay County in southeastern South Dakota... Northwestern Union County in southeastern South Dakota... * Until 1000 PM CDT. * At 911 PM CDT, a severe thunderstorm capable of producing a tornado was located 7 miles west of Union Grove State Park, or 10 miles north of Vermillion, moving east at 10 mph. HAZARD...Tornado and half dollar size hail. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely. * This dangerous storm will be near... Union Grove State Park around 915 PM CDT.
What the agency told people to 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.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.