Tornado and Damaging Winds in North Dakota, May 15, 1977

Name: Tornado and Damaging Winds in North Dakota, May 15, 1977
Start: 1977-05-15T12:30
End: 1977-05-15T19:10
Location: North Dakota

May 15, 1977 · NWS ATA · 7 events in 5 counties and zones

6 thunderstorm wind, 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

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The toll

Deaths: 0
Injuries: 0
Property damage: $25,000
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

6 thunderstorm wind, 1 tornado. Local standard time, as filed.

Thunderstorm Wind, Morton

When: May 15, 12:30 PM CST
Where: Morton County
Coordinates: 46.870, -101.870

Thunderstorm Wind, Burleigh

When: May 15, 4:12 PM CST
Where: Burleigh County
Coordinates: 47.000, -100.700

Thunderstorm Wind, Burleigh

When: May 15, 4:25 PM CST
Where: Burleigh County
Coordinates: 46.820, -100.520

Thunderstorm Wind, Dickey

When: May 15, 5:15 PM CST
Where: Dickey County
Measured: 52 kt (60 mph)
Coordinates: 46.170, -98.400

Thunderstorm Wind, Ransom

When: May 15, 6:30 PM CST
Where: Ransom County
Coordinates: 46.400, -97.200

Thunderstorm Wind, Ransom

When: May 15, 6:50 PM CST
Where: Ransom County
Coordinates: 46.580, -97.480

Tornado, McHenry

When: May 15, 7:10 PM CST
Where: McHenry County
Rating: F1
Path length: 1.3 mi
Path width: 33 yd
Property damage: $25,000
Coordinates: 48.330, -100.400

What these are

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

Every storm in North Dakota in 1977 Every state in 1977 This day in weather history The tornado archive for North Dakota, 1977

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: 10084998, 10084999, 10085000, 10085001, 10085002, 10085003, 10085004.