Hail, Ramsey
- When
- May 11, 4:30 PM CST
- Where
- Ramsey County
- Measured
- 0.75 in hail
- Coordinates
- 48.230, -99.050
Tornadoes and Hail in North Dakota, May 11, 1986
9 hail, 6 tornado, 4 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
- 19
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
9 hail, 6 tornado, 4 thunderstorm wind. Local standard time, as filed.
Hail, Pembina
- When
- May 11, 6:55 PM CST
- Where
- Pembina County
- Measured
- 2 in hail
- Coordinates
- 48.680, -97.850
Hail, Sioux
- When
- May 11, 7:15 PM CST
- Where
- Sioux County
- Measured
- 2.75 in hail
- Coordinates
- 45.950, -100.820
Hail, Sioux
- When
- May 11, 7:15 PM CST
- Where
- Sioux County
- Measured
- 1.75 in hail
- Coordinates
- 46.080, -101.170
Tornado, Emmons
- When
- May 11, 7:20 PM CST
- Where
- Emmons County
- Rating
- F0
- Path length
- 0.2 mi
- Path width
- 13 yd
- Coordinates
- 45.970, -100.300
Tornado, Emmons
- When
- May 11, 7:20 PM CST
- Where
- Emmons County
- Rating
- F0
- Path length
- 0.2 mi
- Path width
- 13 yd
- Coordinates
- 45.970, -100.300
Hail, Sioux
- When
- May 11, 8:00 PM CST
- Where
- Sioux County
- Measured
- 0.75 in hail
- Coordinates
- 45.980, -100.630
Hail, Pembina
- When
- May 11, 8:00 PM CST
- Where
- Pembina County
- Measured
- 0.75 in hail
- Coordinates
- 48.880, -97.750
Thunderstorm Wind, Griggs
- When
- May 11, 8:55 PM CST
- Where
- Griggs County
- Measured
- 50 kt (58 mph)
- Coordinates
- 47.600, -98.400
Tornado, Stutsman
- When
- May 11, 9:15 PM CST
- Where
- Stutsman County
- Rating
- F0
- Path length
- 0.2 mi
- Path width
- 13 yd
- Coordinates
- 46.930, -98.500
Hail, Griggs
- When
- May 11, 9:30 PM CST
- Where
- Griggs County
- Measured
- 0.75 in hail
- Coordinates
- 47.450, -98.120
Hail, Griggs
- When
- May 11, 9:30 PM CST
- Where
- Griggs County
- Measured
- 0.75 in hail
- Coordinates
- 47.270, -98.200
Thunderstorm Wind, Barnes
- When
- May 11, 10:00 PM CST
- Where
- Barnes County
- Coordinates
- 46.920, -98.000
Thunderstorm Wind, Barnes
- When
- May 11, 10:00 PM CST
- Where
- Barnes County
- Coordinates
- 46.930, -98.300
Thunderstorm Wind, Griggs
- When
- May 11, 10:05 PM CST
- Where
- Griggs County
- Measured
- 56 kt (64 mph)
- Coordinates
- 47.320, -98.180
Tornado, Steele
- When
- May 11, 10:30 PM CST
- Where
- Steele County
- Rating
- F1
- Path length
- 0.1 mi
- Path width
- 100 yd
- Property damage
- $25,000
- Coordinates
- 47.630, -97.500
Tornado, Traill
- When
- May 11, 10:31 PM CST
- Where
- Traill County
- Rating
- F1
- Path length
- 0.1 mi
- Path width
- 100 yd
- Property damage
- $25,000
- Coordinates
- 47.630, -97.450
Hail, Grand Forks
- When
- May 11, 10:55 PM CST
- Where
- Grand Forks County
- Measured
- 0.75 in hail
- Coordinates
- 47.730, -97.570
Tornado, Grand Forks
- When
- May 11, 11:40 PM CST
- Where
- Grand Forks County
- Rating
- F1
- Path length
- 0.2 mi
- Path width
- 13 yd
- Property damage
- $3,000
- Coordinates
- 47.780, -97.100
What these are
- 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.
The same day elsewhere
More
Every storm in North Dakota in 1986Every state in 1986This day in weather historyThe tornado archive for North Dakota, 1986Warnings in North Dakota, May 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: 10085333, 10085334, 10085335, 10085336, 10085337, 10085338, 10085339, 10085340, 10085341, 10085342, 10085343, 10085344, 10085345, 10085346, 10085347, 10085348, 10085349, 10085350, 10085351.