404
Recorded events
2
Direct deaths
5
Direct injuries
$6K
Property damage
Thunderstorm Wind in Brown County, South Dakota: 404 recorded events between 1955 and 2025. The strongest on record measured 113. That places the county #204 nationally and #3 statewide for this hazard.
Decade by decade
Thunderstorm Wind in Brown County, South Dakota: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for thunderstorm wind in Brown County is the 2020s, when 107 of the county's 404 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Brown County archive, thunderstorm wind makes up 36.7% of all recorded severe weather across 8 hazard types. Nationally the county sits at #204 for this hazard and #3 within South Dakota, putting it in the 93.6 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for thunderstorm wind in Brown County with 144 recorded events, while Jan is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Sep 25, 1986 | 0 | 2 | 5 | $0 |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Sep 9, 2025 | RUDOLPH | 52 | $0 |
| Aug 17, 2025 | (ABR)ABERDEEN RGNL A | 55 | $0 |
| Aug 17, 2025 | (ABR)ABERDEEN RGNL A | 55 | $0 |
| Aug 15, 2025 | GROTON | 52 | $0 |
| Aug 8, 2025 | (ABR)ABERDEEN RGNL A | 52 | $0 |
| Aug 6, 2025 | GROTON | 56 | $0 |
| Aug 6, 2025 | ABERDEEN | 61 | $0 |
| Aug 6, 2025 | WESTPORT | 61 | $0 |
| Aug 6, 2025 | ABERDEEN | 56 | $0 |
| Jul 22, 2025 | FREDERICK | 52 | $0 |
Other hazards here
More from Brown County
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
The Brown County Emergency Manager reported damage around the fairgrounds, and a social media report with photos depicted tree damage at Rolling Meadows Drive, both on the north side of Aberdeen. The time of the damage is radar estimated.
A barn collapsed and other outbuildings sustained roof and siding damage. A 2×4 was driven through a garage wall. A hay feeder was tipped. Some trees were uprooted and others damaged. Debris was widespread through the farmyard and spread about 300 yards northeast.
A ranch sustained significant damage from straight-line winds. One barn was completely destroyed and a second pig barn had the roof ripped off. Hundreds of trees were uprooted, snapped or damaged. The property had a personal weather station which recorded 120 mph winds.
Quick answers
Frequently asked
How many thunderstorm wind events are on record in Brown County, South Dakota?
404 thunderstorm wind events are recorded in Brown County between 1955 and 2025, causing 2 direct deaths.
What is the strongest thunderstorm wind recorded in Brown County?
The strongest thunderstorm wind on record in Brown County measured 113.
Where does the thunderstorm wind data for Brown County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Thunderstorm Wind in Brown County, South Dakota.” Severe Weather History. severeweatherhistory.com/county/south-dakota/brown-county/thunderstorm-wind/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.