Minnesota, 1978Tornado and Hail in Minnesota, August 17, 1978
August 17, 1978 · NWS MT · 5 events in 4 counties and zones
3 hail, 1 tornado, 1 thunderstorm wind, as filed by the National Weather Service.
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
Open the live radar over this ground
- Deaths
- 0
- Injuries
- 0
- Property damage
- $25,000
- Crop damage
- None recorded
- Events
- 5
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 hail, 1 tornado, 1 thunderstorm wind. Local standard time, as filed.
Hail, Norman
- When
- August 17, 4:14 PM CST
- Where
- Norman County
- Measured
- 1.75 in hail
- Coordinates
- 47.180, -96.520
Hail, Clearwater
- When
- August 17, 5:27 PM CST
- Where
- Clearwater County
- Measured
- 1.75 in hail
- Coordinates
- 47.520, -95.400
Tornado, Beltrami
- When
- August 17, 6:37 PM CST
- Where
- Beltrami County
- Rating
- F1
- Path length
- 13.5 mi
- Path width
- 880 yd
- Property damage
- $25,000
- Coordinates
- 47.750, -94.670
Hail, Koochiching
- When
- August 17, 7:00 PM CST
- Where
- Koochiching County
- Measured
- 2.75 in hail
- Coordinates
- 47.920, -94.220
Thunderstorm Wind, Koochiching
- When
- August 17, 7:00 PM CST
- Where
- Koochiching County
- Coordinates
- 47.920, -94.220
- 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.
- 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.
- Hail and Damaging Winds in Kansas, August 17, 19781.75 in hail · 3 events
- Hail in North Dakota, August 17, 19782.25 in hail · 3 events
- Hail and Damaging Winds in Kentucky, August 17, 19781.75 in hail · 3 events
- Hail and Damaging Wind in Colorado, August 17, 19781.75 in hail · 2 events
- Hail in Iowa, August 17, 19782 in hail · 1 event
- Hail in Illinois, August 17, 19781.75 in hail · 1 event
- Hail in Indiana, August 17, 19781.75 in hail · 1 event
- Damaging Wind in Georgia, August 17, 19781 event
- Damaging Wind in Louisiana, August 17, 19781 event
- Tornado in Florida, August 17, 1978$250 · F0 · 1 event
- Damaging Wind in Tennessee, August 17, 19781 event
- Hail in Nebraska, August 17, 19781.75 in hail · 1 event
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: 10054834, 10054835, 10054836, 10054837, 10054838.