Tornado, Clay
- When
- July 21, 6:45 PM CST
- Where
- Clay County
- Rating
- F0
- Path length
- 0.2 mi
- Path width
- 10 yd
- Coordinates
- 46.970, -96.270
Tornado and Hail in Minnesota, July 21, 1987
3 thunderstorm wind, 3 hail, 1 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
- None recorded
- Crop damage
- None recorded
- Events
- 7
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
3 thunderstorm wind, 3 hail, 1 tornado. Local standard time, as filed.
Thunderstorm Wind, Clay
- When
- July 21, 7:00 PM CST
- Where
- Clay County
- Coordinates
- 46.880, -96.750
Hail, Polk
- When
- July 21, 7:30 PM CST
- Where
- Polk County
- Measured
- 0.75 in hail
- Coordinates
- 47.520, -95.630
Thunderstorm Wind, Clearwater
- When
- July 21, 7:30 PM CST
- Where
- Clearwater County
- Coordinates
- 47.530, -95.270
Thunderstorm Wind, St. Louis
- When
- July 21, 8:30 PM CST
- Where
- St. Louis County
- Coordinates
- 47.900, -92.370
Hail, Norman
- When
- July 21, 10:35 PM CST
- Where
- Norman County
- Measured
- 0.75 in hail
- Coordinates
- 47.470, -96.830
Hail, Norman
- When
- July 21, 11:02 PM CST
- Where
- Norman County
- Measured
- 0.75 in hail
- Coordinates
- 47.300, -96.520
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.
- 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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Hail in Wyoming, July 21, 1987
- Tornadoes and Hail in North Dakota, July 21, 1987
- Tornado in New Jersey, July 21, 1987
- Tornado in Virginia, July 21, 1987
- Hail and Damaging Winds in Utah, July 21, 1987
- Tornado and Damaging Winds in Idaho, July 21, 1987
- Damaging Winds in Iowa, July 21, 1987
- Damaging Winds in Delaware, July 21, 1987
- Damaging Wind in Pennsylvania, July 21, 1987
- Hail in California, July 21, 1987
- Tornado in Wisconsin, July 21, 1987
- Hail in Oregon, July 21, 1987
More
Every storm in Minnesota in 1987Every state in 1987This day in weather historyThe tornado archive for Minnesota, 1987Warnings in Minnesota, 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: 10050359, 10050360, 10050361, 10050362, 10050363, 10050364, 10050365.