BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Sioux Falls SD 510 PM CDT Wed Jun 17 2026 The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Lyon County in northwestern Iowa... Osceola County in northwestern Iowa... Sioux County in northwestern Iowa... Northern Plymouth County in northwestern Iowa... Western O'Brien County in northwestern Iowa... Rock County in southwestern Minnesota... Southern Nobles County in southwestern Minnesota... Northern Clay County in southeastern South Dakota... Lincoln County in southeastern South Dakota... Northern Union County in southeastern South Dakota... * Until 600 PM CDT. * At 509 PM CDT, severe thunderstorms were located along a line extending from near Luverne to near Canton to near Centerville, moving southeast at 60 mph. HAZARD...60 mph wind gusts. SOURCE...Mesonet. At 452 PM CDT, a 57 mph wind gust was reported 3 miles east southeast of Parker, SD. IMPACT...Expect damage to roofs, siding, and trees. * Severe thunderstorms will be near... Canton, Rock Rapids, Beresford, Inwood, Lester, Alvord, Fairview, and Newton Hills State Park around 515 PM CDT. Rock Valley, Alcester, Doon, Ellsworth, and Hudson around 520 PM CDT. Hawarden and George around 525 PM CDT. Other locations in the path of these severe thunderstorms include Sioux Center, Hull, Little Rock, Sibley, Boyden, Ireton, Ashton, Matlock, Orange City, Sheldon, Maurice, Craig, Alton, Hospers, Melvin, Struble, Le Mars, Sanborn, Granville and Archer. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Wind damage with these storms will occur before any rain or lightning. Do not wait for the sound of thunder before taking cover. SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from windows. && LAT...LON 4293 9717 4308 9715 4308 9693 4327 9692 4339 9668 4350 9660 4350 9645 4374 9644 4370 9562 4354 9545 4351 9546 4349 9539 4342 9538 4295 9575 4270 9625 TIME...MOT...LOC 2209Z 302DEG 51KT 4364 9627 4335 9656 4315 9694 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...OBSERVED MAX WIND GUST...60 MPH
