Thunderstorm Wind, Walworth
- When
- May 11, 12:05 AM CST
- Where
- Walworth County
- Measured
- 60 kt (69 mph)
- Coordinates
- 45.530, -100.430
Tornadoes and Hail in South Dakota, May 11, 1985
20 tornado, 1 thunderstorm wind, 1 hail, as filed by the National Weather Service.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 22
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.
Event by event
20 tornado, 1 thunderstorm wind, 1 hail. Local standard time, as filed.
Tornado, Charles Mix
- When
- May 11, 3:22 PM CST
- Where
- Charles Mix County
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 3 yd
- Coordinates
- 43.000, -98.300
Tornado, Charles Mix
- When
- May 11, 3:30 PM CST
- Where
- Charles Mix County
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 3 yd
- Coordinates
- 43.070, -98.230
Tornado, Davison
- When
- May 11, 4:33 PM EST
- Where
- Davison County
- Rating
- F0
- Path length
- 5.6 mi
- Path width
- 7 yd
- Coordinates
- 43.470, -98.050
Tornado, Douglas
- When
- May 11, 4:15 PM CST
- Where
- Douglas County
- Rating
- F0
- Path length
- 10.4 mi
- Path width
- 7 yd
- Coordinates
- 43.320, -98.170
Tornado, Hutchinson
- When
- May 11, 4:28 PM CST
- Where
- Hutchinson County
- Rating
- F0
- Path length
- 4 mi
- Path width
- 7 yd
- Coordinates
- 43.420, -98.080
Tornado, Hanson
- When
- May 11, 4:55 PM CST
- Where
- Hanson County
- Rating
- F0
- Path length
- 11.4 mi
- Path width
- 7 yd
- Coordinates
- 43.750, -97.920
Tornado, Davison
- When
- May 11, 5:03 PM CST
- Where
- Davison County
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 3 yd
- Coordinates
- 43.750, -98.100
Tornado, McCook
- When
- May 11, 5:04 PM CST
- Where
- McCook County
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 3 yd
- Coordinates
- 43.830, -97.430
Tornado, Miner
- When
- May 11, 5:04 PM CST
- Where
- Miner County
- Rating
- F0
- Path length
- 4 mi
- Path width
- 100 yd
- Coordinates
- 43.900, -97.750
Tornado, McCook
- When
- May 11, 5:08 PM CST
- Where
- McCook County
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 3 yd
- Coordinates
- 43.700, -97.500
Hail, Davison
- When
- May 11, 5:08 PM CST
- Where
- Davison County
- Measured
- 1.5 in hail
- Coordinates
- 43.630, -98.020
Tornado, Miner
- When
- May 11, 5:14 PM CST
- Where
- Miner County
- Rating
- F0
- Path length
- 3.6 mi
- Path width
- 7 yd
- Coordinates
- 43.850, -97.830
Tornado, Miner
- When
- May 11, 5:15 PM CST
- Where
- Miner County
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 3 yd
- Coordinates
- 44.020, -97.730
Tornado, Sanborn
- When
- May 11, 5:15 PM CST
- Where
- Sanborn County
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 3 yd
- Coordinates
- 43.850, -97.920
Tornado, Douglas
- When
- May 11, 5:24 PM CST
- Where
- Douglas County
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 3 yd
- Coordinates
- 43.400, -98.170
Tornado, Sanborn
- When
- May 11, 5:24 PM CST
- Where
- Sanborn County
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 3 yd
- Coordinates
- 44.050, -98.050
Tornado, Miner
- When
- May 11, 5:46 PM CST
- Where
- Miner County
- Rating
- F0
- Path length
- 3.3 mi
- Path width
- 7 yd
- Coordinates
- 44.170, -97.620
Tornado, Kingsbury
- When
- May 11, 5:51 PM CST
- Where
- Kingsbury County
- Rating
- F0
- Path length
- 1.7 mi
- Path width
- 7 yd
- Coordinates
- 44.200, -97.570
Tornado, Miner
- When
- May 11, 5:51 PM CST
- Where
- Miner County
- Rating
- F0
- Path length
- 4 mi
- Path width
- 7 yd
- Coordinates
- 43.880, -97.570
Tornado, Kingsbury
- When
- May 11, 6:08 PM CST
- Where
- Kingsbury County
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 3 yd
- Coordinates
- 44.220, -97.320
Tornado, Kingsbury
- When
- May 11, 6:40 PM CST
- Where
- Kingsbury County
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 3 yd
- Coordinates
- 44.220, -97.530
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
- Tornado
- A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Damaging Winds in Wisconsin, May 11, 1985
- Tornadoes and Hail in Iowa, May 11, 1985
- Tornado and Hail in Texas, May 11, 1985
- Tornado and Hail in Minnesota, May 11, 1985
- Hail and Damaging Winds in Missouri, May 11, 1985
- Tornado and Damaging Winds in Nebraska, May 11, 1985
- Damaging Wind in Kansas, May 11, 1985
- Damaging Wind in Illinois, May 11, 1985
More
Every storm in South Dakota in 1985Every state in 1985This day in weather historyThe tornado archive for South Dakota, 1985
Sources
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 2026-09-24. Each event’s entry at NCEI: 10124777, 10124778, 10124779, 10124782, 10124780, 10124781, 10124783, 10124784, 10124785, 10124786, 10124787, 10124788, 10124789, 10124790, 10124791, 10124792, 10124793, 10124794, 10124795, 10124796, 10124797, 10124798.