Tornadoes, hail, floods and severe storms recorded here between 1955 and 2026, from NOAA's Storm Events Database. Search an address to see which tornadoes came closest to it.
The part of each tornado’s path NOAA recorded in this county, 26 in all. Zoom in and the paths widen to their surveyed width.
Hover or tap a bar to see that year.
NOAA's storm database records tornadoes back to 1950 and hail and thunderstorm wind back to 1955, but floods only from 1996 on. Older floods are missing here. For those, the U.S. Geological Survey's stream gauge records and flood reports are the place to look.
The strongest tornadoes, deadliest events and biggest damage here, up to 50.
June 20, 1968 · Walworth, South Dakota
June 20, 1968 · Walworth, South Dakota
January 8, 2019 · Walworth, South Dakota
December 25, 2016 · Walworth, South Dakota
May 17, 2018 · Walworth, South Dakota
June 27, 2026 · Walworth, South Dakota
June 15, 2026 · Walworth, South Dakota
June 8, 2026 · Walworth, South Dakota
June 2, 2026 · Walworth, South Dakota
Quarter-sized hail (1.00 inch) was reported near Hoven.
April 22, 2026 · Walworth, South Dakota
April 22, 2026 · Walworth, South Dakota
April 22, 2026 · Walworth, South Dakota
March 12, 2026 · Walworth, South Dakota
The South Dakota Department of Transportation mesonet station 4 miles east southeast of the town of Akaska recorded a peak wind gust of 71 mph, while the ASOS at the Mobridge Municipal Airport topped out at 68 mph. These strong winds resulted in the downing of a HAM radio tower a…
February 18, 2026 · Walworth, South Dakota
The Walworth county Sheriff reported whiteout conditions across the county during the early morning hours. The South Dakota Department of Transportation mesonet stations and the Mobridge Regional Airport ASOS all recorded a peak wind gust of 58 mph while snow was ongoing.
January 23, 2026 · Walworth, South Dakota
January 21, 2026 · Walworth, South Dakota
January 16, 2026 · Walworth, South Dakota
The Walworth County Sheriff and Emergency Management issued No Travel Advised as intermittent near-blizzard conditions developed. The South Dakota Department of Transportation mesonet station near Selby recorded a peak wind gust of 61 mph.
January 16, 2026 · Walworth, South Dakota
Walworth county Emergency management and Sheriff issued a No Travel Advised for Walworth county. South Dakota Department of Transportation (SDDOT) webcams indicated intermitted near-blizzard conditions through the day. A peak wind gust of 61 mph was recorded at the SDDOT mesonet …
December 18, 2025 · Walworth, South Dakota
December 9, 2025 · Walworth, South Dakota
November 25, 2025 · Walworth, South Dakota
The ASOS at the Mobridge Municipal Airport recorded visibility dropping to between 1/4 and 1/2 mile starting at 8:05 am, continuing through 11:20 am. A peak wind gust of 52 mph was recorded at 9:26 am. The South Dakota Department of Transportation issued a No Travel Advised state…
October 26, 2025 · Walworth, South Dakota
October 20, 2025 · Walworth, South Dakota
September 14, 2025 · Walworth, South Dakota
The Walworth County Emergency Manager estimated the wind speed to top out between 60 to 70 mph as the storm passed through after the ASOS lost power.
September 14, 2025 · Walworth, South Dakota
The tornado tracked north-northwest over mainly open country near the city of Mobridge. This tornado initially hit a farmstead where damage was observed to a grain silo. It then tipped two semi-trailers on SD Highway 1804. The tornado destroyed an outbuilding at another farmstead…
September 4, 2025 · Walworth, South Dakota
August 13, 2025 · Walworth, South Dakota
August 8, 2025 · Walworth, South Dakota
August 8, 2025 · Walworth, South Dakota
August 5, 2025 · Walworth, South Dakota
July 26, 2025 · Walworth, South Dakota
A decaying thunderstorm generated a 58 mph wind gust, associated with a heat burst, 2 miles south of Lowry on a South Dakota State University mesonet station.
July 23, 2025 · Walworth, South Dakota
A peak wind gust of 76 mph was measured by the South Dakota Department of Transportation weather station two miles south of Lowry.
July 21, 2025 · Walworth, South Dakota
A peak wind gust of 63 mph was observed by a South Dakota State University mesonet station in the town of Glenham.
July 14, 2025 · Walworth, South Dakota
July 14, 2025 · Walworth, South Dakota
A trained spotter in the Selby area estimated that non-thunderstorm wind gusts between 70 and 80 mph were responsible for downing trees and limbs.
July 14, 2025 · Walworth, South Dakota
July 9, 2025 · Walworth, South Dakota
In Mobridge, powerful thunderstorm winds broke three power poles. The roof of a business, which had been previously damaged, was completely ripped off. The nearby Automated Surface Observing System at the Mobridge Regional Airport reported a gust of 61 mph.
July 9, 2025 · Walworth, South Dakota
July 9, 2025 · Walworth, South Dakota
July 9, 2025 · Walworth, South Dakota
The caller stated wind gusts had topped out around 60 mph.
July 9, 2025 · Walworth, South Dakota
July 9, 2025 · Walworth, South Dakota
An mPING report indicated estimated 60 mph winds, which resulted in broken branches, damaged power lines, and shifted poles.
June 16, 2025 · Walworth, South Dakota
June 7, 2025 · Walworth, South Dakota
May 15, 2025 · Walworth, South Dakota
May 11, 2025 · Walworth, South Dakota
A fire developed from an old tree pile burn on 134th street and quickly spread north, mainly though pasture and field stubble. Damage included fence posts and power lines that ran through the area. Total acres burned was calculated at 859, with the fire running northeast for 3.25…
April 28, 2025 · Walworth, South Dakota
April 9, 2025 · Walworth, South Dakota
April 1, 2025 · Walworth, South Dakota
March 1, 2025 · Walworth, South Dakota