Iowa Tornado Warning | Effective 05/17/2026 18:48

Headline: 
Tornado Warning issued May 17 at 8:48PM CDT until May 17 at 9:15PM CDT by NWS Sioux Falls SD
Event: 
Tornado Warning
Urgency: 
Immediate
Effective: 
May 17, 2026 - 6:48pm
Expires: 
May 17, 2026 - 7:15pm
Description: 
TORFSD The National Weather Service in Sioux Falls has issued a * Tornado Warning for... Southeastern Dickinson County in northwestern Iowa... Clay County in northwestern Iowa... * Until 915 PM CDT. * At 847 PM CDT, severe thunderstorms capable of producing both tornadoes and extensive straight line wind damage were located near Greenville, or 9 miles southwest of Spencer In Clay County, moving northeast at 70 mph. HAZARD...Tornado and quarter 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. * These dangerous storms will be near... Spencer In Clay County and Lost Island Lake around 855 PM CDT.
Instruction: 
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. Tornadoes are extremely difficult to see and confirm at night. Do not wait to see or hear the tornado. TAKE COVER NOW!
Area Description: 
Clay, IA; Dickinson, IA
Forcast Office: 
NWS Sioux Falls SD