Thunderstorm Wind, Brule
- When
- July 18, 12:15 PM CST
- Where
- Brule County
- Measured
- 52 kt (60 mph)
- Coordinates
- 43.750, -98.950
Tornadoes and Hail in South Dakota, July 18, 1986
10 hail, 4 thunderstorm wind, 4 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
- $53,000
- Crop damage
- None recorded
- Events
- 18
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
10 hail, 4 thunderstorm wind, 4 tornado. Local standard time, as filed.
Thunderstorm Wind, Meade
- When
- July 18, 1:47 PM CST
- Where
- Meade County
- Measured
- 56 kt (64 mph)
- Coordinates
- 44.150, -103.100
Hail, Clark
- When
- July 18, 2:00 PM CST
- Where
- Clark County
- Measured
- 1.75 in hail
- Coordinates
- 44.620, -97.620
Thunderstorm Wind, Hamlin
- When
- July 18, 2:40 PM CST
- Where
- Hamlin County
- Measured
- 69 kt (79 mph)
- Coordinates
- 44.580, -97.200
Tornado, Hamlin
- When
- July 18, 2:45 PM CST
- Where
- Hamlin County
- Rating
- F2
- Path length
- 14 mi
- Path width
- 100 yd
- Property damage
- $25,000
- Coordinates
- 44.570, -97.450
Hail, Pennington
- When
- July 18, 2:55 PM CST
- Where
- Pennington County
- Measured
- 1.75 in hail
- Coordinates
- 44.020, -102.230
Hail, Pennington
- When
- July 18, 3:10 PM CST
- Where
- Pennington County
- Measured
- 1.75 in hail
- Coordinates
- 44.000, -102.230
Hail, Perkins
- When
- July 18, 3:15 PM CST
- Where
- Perkins County
- Measured
- 1.75 in hail
- Coordinates
- 45.950, -102.170
Thunderstorm Wind, Hamlin
- When
- July 18, 3:15 PM CST
- Where
- Hamlin County
- Measured
- 52 kt (60 mph)
- Coordinates
- 44.670, -97.200
Tornado, Deuel
- When
- July 18, 3:38 PM CST
- Where
- Deuel County
- Rating
- F2
- Path length
- 17 mi
- Path width
- 150 yd
- Property damage
- $25,000
- Coordinates
- 44.570, -96.700
Hail, Clark
- When
- July 18, 3:50 PM CST
- Where
- Clark County
- Measured
- 1.75 in hail
- Coordinates
- 44.900, -97.700
Tornado, Perkins
- When
- July 18, 4:00 PM CST
- Where
- Perkins County
- Rating
- F2
- Path length
- 10.5 mi
- Path width
- 140 yd
- Property damage
- $3,000
- Coordinates
- 45.520, -102.230
Hail, Hamlin
- When
- July 18, 4:05 PM CST
- Where
- Hamlin County
- Measured
- 1.75 in hail
- Coordinates
- 44.700, -97.150
Hail, Jackson
- When
- July 18, 4:10 PM CST
- Where
- Jackson County
- Measured
- 1.75 in hail
- Coordinates
- 43.570, -101.670
Hail, Brookings
- When
- July 18, 4:10 PM CST
- Where
- Brookings County
- Measured
- 1 in hail
- Coordinates
- 44.530, -96.570
Tornado, Perkins
- When
- July 18, 4:15 PM CST
- Where
- Perkins County
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 40 yd
- Coordinates
- 45.530, -102.350
Hail, Dewey
- When
- July 18, 4:20 PM CST
- Where
- Dewey County
- Measured
- 1.75 in hail
- Coordinates
- 45.080, -100.820
Hail, Day
- When
- July 18, 4:25 PM CST
- Where
- Day County
- Measured
- 1.75 in hail
- Coordinates
- 45.480, -97.470
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.
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Damaging Winds in Pennsylvania, July 18, 1986
- Tornadoes and Hail in Minnesota, July 18, 1986
- Hail and Damaging Winds in Wisconsin, July 18, 1986
- Hail and Damaging Winds in Maine, July 18, 1986
- Hail and Damaging Winds in Michigan, July 18, 1986
- Hail in Nebraska, July 18, 1986
- Damaging Winds in New York, July 18, 1986
More
Every storm in South Dakota in 1986Every state in 1986This day in weather historyThe tornado archive for South Dakota, 1986Warnings in South Dakota, July 1986
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: 10127085, 10127086, 10127087, 10123470, 10123471, 10123472, 10123473, 10123474, 10123475, 10123476, 10123477, 10123478, 10123479, 10123480, 10123481, 10123482, 10123483, 10123484.