Hail, Stark
- When
- July 31, 3:50 PM CST
- Where
- Stark County
- Measured
- 0.75 in hail
- Coordinates
- 46.780, -102.800
Tornadoes and Hail in North Dakota, July 31, 1966
7 tornado, 2 hail, 1 thunderstorm wind, 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
- 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
7 tornado, 2 hail, 1 thunderstorm wind. Local standard time, as filed.
Thunderstorm Wind, Stark
- When
- July 31, 3:50 PM CST
- Where
- Stark County
- Coordinates
- 46.780, -102.800
Tornado, Sioux
- When
- July 31, 4:30 PM CST
- Where
- Sioux County
- Path width
- 33 yd
- Coordinates
- 46.100, -100.900
Tornado, Emmons
- When
- July 31, 6:35 PM CST
- Where
- Emmons County
- Path width
- 33 yd
- Coordinates
- 46.200, -100.300
Tornado, Emmons
- When
- July 31, 6:35 PM CST
- Where
- Emmons County
- Path width
- 33 yd
- Coordinates
- 46.200, -100.300
Tornado, McIntosh
- When
- July 31, 8:00 PM CST
- Where
- McIntosh County
- Rating
- F3
- Path length
- 1.3 mi
- Path width
- 33 yd
- Property damage
- $25,000
- Coordinates
- 46.000, -99.470
Hail, Mercer
- When
- July 31, 8:00 PM CST
- Where
- Mercer County
- Measured
- 2.75 in hail
- Coordinates
- 47.280, -101.580
Tornado, Dickey
- When
- July 31, 8:30 PM CST
- Where
- Dickey County
- Rating
- F2
- Path width
- 33 yd
- Property damage
- $25,000
- Coordinates
- 46.000, -98.500
Tornado, Ransom
- When
- July 31, 9:00 PM CST
- Where
- Ransom County
- Path width
- 33 yd
- Property damage
- $250
- Coordinates
- 46.400, -97.700
Tornado, Mercer
- When
- July 31, 9:00 PM CST
- Where
- Mercer County
- Path width
- 33 yd
- Property damage
- $3,000
- Coordinates
- 47.300, -101.500
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
More
Every storm in North Dakota in 1966Every state in 1966This day in weather historyThe tornado archive for North Dakota, 1966
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: 10085119, 10085120, 10085121, 10085122, 10085123, 10085124, 10085125, 10085126, 10085127, 10085128.