BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Sioux Falls SD 708 PM CDT Sun May 31 2026 The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Southwestern Minnehaha County in southeastern South Dakota... Southeastern McCook County in southeastern South Dakota... * Until 800 PM CDT. * At 708 PM CDT, a severe thunderstorm was located near Montrose, or near Lake Vermillion State Recreation Area, moving east at 15 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * This severe thunderstorm will be near... Lake Vermillion State Recreation Area, Humboldt, and Montrose around 715 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4355 9728 4372 9734 4380 9704 4357 9698 TIME...MOT...LOC 0008Z 256DEG 13KT 4366 9722 TORNADO...POSSIBLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH
