Montana, 1991

Tornadoes and Hail in Montana, July 4, 1991

July 4, 1991 · NWS GGW · 9 events in 4 counties and zones

5 hail, 2 tornado, 2 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

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The toll

Deaths
0
Injuries
0
Property damage
$50,000
Crop damage
None recorded
Events
9

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

Hail, Valley

When
July 4, 6:00 PM CST
Where
Valley County
Measured
0.75 in hail
Coordinates
48.070, -106.850

Hail, Phillips

When
July 4, 6:00 PM CST
Where
Phillips County
Measured
2.75 in hail
Coordinates
48.770, -107.620

Hail, Phillips

When
July 4, 7:45 PM CST
Where
Phillips County
Measured
2.75 in hail
Coordinates
48.800, -107.330

Tornado, Phillips

When
July 4, 7:00 PM MST
Where
Phillips County
Rating
F1
Path length
0.2 mi
Path width
10 yd
Property damage
$25,000
Coordinates
48.580, -107.520

Tornado, Phillips

When
July 4, 7:30 PM MST
Where
Phillips County
Rating
F1
Path length
0.2 mi
Path width
10 yd
Property damage
$25,000
Coordinates
48.930, -107.870

Hail, Valley

When
July 4, 9:25 PM CST
Where
Valley County
Measured
1.75 in hail
Coordinates
48.400, -107.080

Thunderstorm Wind, Valley

When
July 4, 9:40 PM CST
Where
Valley County
Coordinates
48.380, -105.900

Hail, McCone

When
July 4, 10:50 PM CST
Where
McCone County
Measured
2.5 in hail
Coordinates
47.420, -105.600

Thunderstorm Wind, Roosevelt

When
July 4, 11:00 PM CST
Where
Roosevelt County
Coordinates
48.100, -105.650

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 Montana in 1991Every state in 1991This day in weather historyThe tornado archive for Montana, 1991Warnings 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: 10072643, 10072644, 10072647, 10072645, 10072646, 10072648, 10072649, 10072650, 10072651.