Tornado and Hail in Montana, July 14, 1991

Name: Tornado and Hail in Montana, July 14, 1991
Start: 1991-07-14T16:30
End: 1991-07-14T22:15
Location: Montana

July 14, 1991 · NWS BIL · 8 events in 7 counties and zones

5 thunderstorm wind, 2 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

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The toll

Deaths: 0
Injuries: 0
Property damage: $3,000
Crop damage: None recorded
Events: 8

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

5 thunderstorm wind, 2 hail, 1 tornado. Local standard time, as filed.

Thunderstorm Wind, Yellowstone

When: July 14, 4:30 PM CST
Where: Yellowstone County
Coordinates: 45.800, -108.480

Hail, Judith Basin

When: July 14, 6:30 PM CST
Where: Judith Basin County
Measured: 1.75 in hail
Coordinates: 47.050, -109.880

Thunderstorm Wind, Treasure

When: July 14, 9:00 PM CST
Where: Treasure County
Coordinates: 46.300, -107.230

Hail, Cascade

When: July 14, 9:30 PM CST
Where: Cascade County
Measured: 1.75 in hail
Coordinates: 46.900, -110.700

Thunderstorm Wind, Custer

When: July 14, 9:35 PM CST
Where: Custer County
Measured: 51 kt (59 mph)
Coordinates: 46.400, -105.830

Thunderstorm Wind, Dawson

When: July 14, 10:00 PM CST
Where: Dawson County
Coordinates: 47.050, -104.730

Thunderstorm Wind, Richland

When: July 14, 10:15 PM CST
Where: Richland County
Measured: 57 kt (66 mph)
Coordinates: 47.700, -104.150

Tornado, Dawson

When: July 14, 10:15 PM MST
Where: Dawson County
Rating: F0
Path length: 0.2 mi
Path width: 10 yd
Property damage: $3,000
Coordinates: 47.050, -104.730

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.
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.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Montana in 1991 Every state in 1991 This day in weather history The tornado archive for Montana, 1991 Warnings in Montana, July 1991

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: 10072662, 10072663, 10072664, 10072665, 10072666, 10072667, 10072669, 10072668.