Elevated storms re-intensified in the early morning hours on the nose of the low-level jet. With effective shear around 30 knots and around 1000 J/kg MUCAPE, storms were able to organize into a short bowing segment, which produced a short path of damaging wind gusts across east central South Dakota with speeds measured up to around 75 mph.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS FSD wrote it up.
Elevated storms re-intensified in the early morning hours on the nose of the low-level jet. With effective shear around 30 knots and around 1000 J/kg MUCAPE, storms were able to organize into a short bowing segment, which produced a short path of damaging wind gusts across east central South Dakota with speeds measured up to around 75 mph.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sioux Falls, SD wrote its last area forecast discussion before the first event at Jun 28, 5:19 AM CST, 37 minutes earlier.
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</html>The Sioux Falls radar (KFSD), 120 km away, was scanning. The volume nearest the first event began at 11:55 UTC.
5 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds were measured by South Dakota Mesonet station DTMS2 De Smet 7N.
Thunderstorm winds caused considerable tree damage and downed around 1 mile of power poles.
Winds were measured by a personal weather station.
Thunderstorm wind gusts were measured by South Dakota Mesonet station VGAS2 Volga.
Thunderstorm wind gusts measured at the Brookings Municipal Airport.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2025Every state in 2025This day in weather historyWarnings in South Dakota, June 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1278643, 1278666, 1278670, 1278660, 1278665.