Tornado, Brown
- When
- July 17, 10:15 AM CST
- Where
- Brown County
- Rating
- F0
- Path length
- 0.2 mi
- Path width
- 3 yd
- Coordinates
- 45.700, -98.820
Tornadoes and Hail in South Dakota, July 17, 1985
8 hail, 5 thunderstorm wind, 3 tornado, 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
- $25,000
- Crop damage
- None recorded
- Events
- 16
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
8 hail, 5 thunderstorm wind, 3 tornado. Local standard time, as filed.
Tornado, Clark
- When
- July 17, 2:30 PM CST
- Where
- Clark County
- Rating
- F1
- Path length
- 0.2 mi
- Path width
- 3 yd
- Property damage
- $25,000
- Coordinates
- 44.920, -97.680
Hail, Clark
- When
- July 17, 2:30 PM CST
- Where
- Clark County
- Measured
- 2.75 in hail
- Coordinates
- 44.950, -97.800
Hail, Clark
- When
- July 17, 2:30 PM CST
- Where
- Clark County
- Measured
- 2.75 in hail
- Coordinates
- 44.900, -97.570
Tornado, Day
- When
- July 17, 2:45 PM CST
- Where
- Day County
- Rating
- F0
- Path length
- 0.2 mi
- Path width
- 3 yd
- Coordinates
- 45.420, -97.500
Hail, Sanborn
- When
- July 17, 3:15 PM CST
- Where
- Sanborn County
- Measured
- 2 in hail
- Coordinates
- 44.050, -98.270
Hail, Sanborn
- When
- July 17, 3:30 PM CST
- Where
- Sanborn County
- Measured
- 2 in hail
- Coordinates
- 44.050, -98.270
Hail, Clark
- When
- July 17, 3:30 PM CST
- Where
- Clark County
- Measured
- 2.75 in hail
- Coordinates
- 44.900, -97.570
Thunderstorm Wind, Clark
- When
- July 17, 3:30 PM CST
- Where
- Clark County
- Coordinates
- 44.950, -97.800
Hail, Beadle
- When
- July 17, 3:38 PM CST
- Where
- Beadle County
- Measured
- 0.75 in hail
- Coordinates
- 44.350, -98.220
Thunderstorm Wind, Beadle
- When
- July 17, 3:38 PM CST
- Where
- Beadle County
- Measured
- 62 kt (71 mph)
- Coordinates
- 44.350, -98.220
Thunderstorm Wind, Lyman
- When
- July 17, 3:40 PM CST
- Where
- Lyman County
- Measured
- 69 kt (79 mph)
- Coordinates
- 43.900, -99.870
Thunderstorm Wind, Spink
- When
- July 17, 4:00 PM CST
- Where
- Spink County
- Coordinates
- 44.870, -98.450
Hail, Sanborn
- When
- July 17, 4:10 PM CST
- Where
- Sanborn County
- Measured
- 1.5 in hail
- Coordinates
- 44.050, -98.270
Hail, Deuel
- When
- July 17, 4:20 PM CST
- Where
- Deuel County
- Measured
- 1.75 in hail
- Coordinates
- 44.750, -96.670
Thunderstorm Wind, Deuel
- When
- July 17, 4:20 PM CST
- Where
- Deuel County
- Measured
- 61 kt (70 mph)
- Coordinates
- 44.750, -96.670
What these are
- 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.
- 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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
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: 10124140, 10124141, 10124142, 10124143, 10124144, 10124145, 10124146, 10124147, 10124148, 10124149, 10124150, 10124151, 10124152, 10124153, 10124154, 10124155.