TornadoLookup

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Walworth County, South Dakota

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.

28
Tornado reports
178
Hail reports
18
Floods since 1996
663
All events
2
Deaths
$3.9M
Property damage

Tornado paths in Walworth County

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.

EF0EF1EF2EF3EF4EF5Unrated

Year by year

19552026
Hover or tap a bar to see that year.
All storm eventsTornadoes

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.

Most significant events

The strongest tornadoes, deadliest events and biggest damage here, up to 50.

June 20, 1968 · Walworth, South Dakota
Tornado F3 Tornado
June 20, 1968 · Walworth, South Dakota
Tornado F3 Tornado
January 8, 2019 · Walworth, South Dakota
Extreme Cold/Wind Chill Extreme Cold/Wind Chill1 death
December 25, 2016 · Walworth, South Dakota
Ice Storm Ice Storm1 death
May 17, 2018 · Walworth, South Dakota
Flash Flood Flash Flood$3.0M damage
June 27, 2026 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
June 15, 2026 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
June 8, 2026 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
June 2, 2026 · Walworth, South Dakota
Hail Hail
Quarter-sized hail (1.00 inch) was reported near Hoven.
April 22, 2026 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
April 22, 2026 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
April 22, 2026 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
March 12, 2026 · Walworth, South Dakota
High Wind High Wind
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
Blizzard Blizzard
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
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
January 21, 2026 · Walworth, South Dakota
High Wind High Wind
January 16, 2026 · Walworth, South Dakota
High Wind High Wind
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
Winter Weather Winter Weather
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
High Wind High Wind
December 9, 2025 · Walworth, South Dakota
High Wind High Wind
November 25, 2025 · Walworth, South Dakota
Blizzard Blizzard
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
High Wind High Wind
October 20, 2025 · Walworth, South Dakota
High Wind High Wind
September 14, 2025 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
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
Tornado EF1 Tornado
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
High Wind High Wind
August 13, 2025 · Walworth, South Dakota
Hail Hail
August 8, 2025 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
August 8, 2025 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
August 5, 2025 · Walworth, South Dakota
Hail Hail
July 26, 2025 · Walworth, South Dakota
High Wind High Wind
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
Thunderstorm Wind Thunderstorm Wind
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
Thunderstorm Wind Thunderstorm Wind
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
High Wind High Wind
July 14, 2025 · Walworth, South Dakota
High Wind High Wind
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
High Wind High Wind
July 9, 2025 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
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
Thunderstorm Wind Thunderstorm Wind
July 9, 2025 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
July 9, 2025 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
The caller stated wind gusts had topped out around 60 mph.
July 9, 2025 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
July 9, 2025 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
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
Thunderstorm Wind Thunderstorm Wind
June 7, 2025 · Walworth, South Dakota
Thunderstorm Wind Thunderstorm Wind
May 15, 2025 · Walworth, South Dakota
High Wind High Wind
May 11, 2025 · Walworth, South Dakota
Wildfire Wildfire
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
High Wind High Wind
April 9, 2025 · Walworth, South Dakota
High Wind High Wind
April 1, 2025 · Walworth, South Dakota
Drought Drought
March 1, 2025 · Walworth, South Dakota
Drought Drought
Events by year, as a table
YearEventsTornadoes
2026130
2025361
2024110
2023170
2022250
2021200
2020210
2019350
2018271
2017200
2016360
2015100
2014160
2013210
2012390
2011211
2010233
2009111
2008150
2007225
2006140
2005100
2004100
200360
2002100
2001140
2000160
199950
199870
1997170
1996270
199561
199451
199340
199260
199131
199060
198920
198810
198730
198671
1985121
198410
198330
198210
198130
198080
197822
197720
197510
197311
197111
197011
196910
196822
196411
196310
196111
196010
195911
195511