Hail, Walworth
- When
- July 9, 3:15 PM CST
- Where
- Walworth County
- Measured
- 1.75 in hail
- Coordinates
- 45.530, -100.430
Tornadoes and Hail in South Dakota, July 9, 1987
4 hail, 4 thunderstorm wind, 2 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
- $3,000
- Crop damage
- None recorded
- Events
- 10
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
4 hail, 4 thunderstorm wind, 2 tornado. Local standard time, as filed.
Hail, Stanley
- When
- July 9, 3:34 PM CST
- Where
- Stanley County
- Measured
- 1 in hail
- Coordinates
- 44.370, -100.920
Hail, Jones
- When
- July 9, 3:45 PM CST
- Where
- Jones County
- Measured
- 1.75 in hail
- Coordinates
- 43.950, -100.920
Thunderstorm Wind, Sully
- When
- July 9, 5:28 PM CST
- Where
- Sully County
- Measured
- 54 kt (62 mph)
- Coordinates
- 44.720, -99.830
Tornado, Lyman
- When
- July 9, 5:30 PM CST
- Where
- Lyman County
- Rating
- F1
- Path length
- 0.5 mi
- Path width
- 50 yd
- Property damage
- $3,000
- Coordinates
- 43.800, -99.650
Hail, Hyde
- When
- July 9, 6:00 PM CST
- Where
- Hyde County
- Measured
- 0.75 in hail
- Coordinates
- 44.300, -99.120
Thunderstorm Wind, Roberts
- When
- July 9, 8:15 PM CST
- Where
- Roberts County
- Measured
- 64 kt (74 mph)
- Coordinates
- 45.300, -97.030
Thunderstorm Wind, Hutchinson
- When
- July 9, 8:25 PM CST
- Where
- Hutchinson County
- Measured
- 60 kt (69 mph)
- Coordinates
- 43.270, -97.580
Thunderstorm Wind, Codington
- When
- July 9, 8:30 PM CST
- Where
- Codington County
- Measured
- 66 kt (76 mph)
- Coordinates
- 45.180, -97.100
Tornado, Deuel
- When
- July 9, 9:30 PM CST
- Where
- Deuel County
- Rating
- F0
- Path length
- 8 mi
- Path width
- 50 yd
- Coordinates
- 44.870, -96.850
What these are
- 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.
- 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 Wind in West Virginia, July 9, 1987
- Tornadoes and Hail in Michigan, July 9, 1987
- Hail and Damaging Winds in Nebraska, July 9, 1987
- Damaging Winds in New York, July 9, 1987
- Hail and Damaging Winds in Colorado, July 9, 1987
- Damaging Wind in Wisconsin, July 9, 1987
- Damaging Wind in Illinois, July 9, 1987
- Damaging Wind in South Carolina, July 9, 1987
- Damaging Wind in Kansas, July 9, 1987
- Tornado in Florida, July 9, 1987
More
Every storm in South Dakota in 1987Every state in 1987This day in weather historyThe tornado archive for South Dakota, 1987Warnings in South Dakota, July 1987
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: 10126005, 10126006, 10126007, 10126008, 10126009, 10126010, 10126011, 10126012, 10126013, 10126014.