Hail and Damaging Winds in Montana, July 22, 2001

Name: Hail and Damaging Winds in Montana, July 22, 2001
Start: 2001-07-22T00:15
End: 2001-07-22T19:50
Location: Montana

July 22, 2001 · NWS BYZ · 17 events in 7 counties and zones

14 hail, 3 thunderstorm wind, as filed by the National Weather Service.

Where it happened

Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. 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

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 17

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.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Billings, MT wrote its last area forecast discussion before the first event at Jul 21, 7:43 PM MST, 4 hours 32 minutes earlier.

Area forecast discussion, Jul 21, 7:43 PM MST, 4 hours 32 minutes before

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In the hours before

Special weather statement, Jul 21, 11:10 PM MST, 1 hour 5 minutes before

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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

14 hail, 3 thunderstorm wind. Local standard time, as filed.

Hail, Custer

When: July 22, 12:15 AM MST
Where: Custer County, Locate
Measured: 1 in hail
Reported by: LAW ENFORCEMENT
Coordinates: 45.433, -105.883

Hail, Custer

When: July 22, 1:18 AM MST
Where: Custer County, 20 mi NW of Miles City
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.450, -105.517

Hail, Big Horn

When: July 22, 2:10 PM MST
Where: Big Horn County, 5 mi SW of Busby
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.933, -107.600

Hail, Big Horn

When: July 22, 2:12 PM MST
Where: Big Horn County, 8 mi S of Busby
Measured: 1.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.967, -107.033

Hail, Big Horn

When: July 22, 2:30 PM MST
Where: Big Horn County, 14 mi N of Hardin
Measured: 1.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.424, -107.490 (the zone’s center; the record gives no point)

Hail, Rosebud

When: July 22, 2:45 PM MST
Where: Rosebud County, 12 mi SW of Lame Deer
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 46.230, -106.731 (the zone’s center; the record gives no point)

Hail, Treasure

When: July 22, 2:50 PM MST
Where: Treasure County, 25 mi SSE of Hysham
Measured: 1 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.383, -104.283

Hail, Rosebud

When: July 22, 3:15 PM MST
Where: Rosebud County, 17 mi NNW of Forsyth
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.483, -108.000

Hail, Powder River

When: July 22, 3:38 PM MST
Where: Powder River County, 2 mi NW of Sonnette
Measured: 1.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.417, -107.933

Hail, Powder River

When: July 22, 4:15 PM MST
Where: Powder River County, 5 mi W of Broadus
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.483, -106.850

Thunderstorm Wind, Powder River

When: July 22, 4:22 PM MST
Where: Powder River County, 6 mi S of Broadus
Reported by: LAW ENFORCEMENT
Coordinates: 46.600, -106.133

70 mph thunderstorm winds caused part of a roof to be removed. Nickel size hail covered the ground.

Thunderstorm Wind, Carter

When: July 22, 4:50 PM MST
Where: Carter County, 7 mi N of Boyes
Reported by: TRAINED SPOTTER
Coordinates: 46.250, -104.283

Golfball size hail covered the ground. 70 mph winds. Multiple windows broken

Hail, Fallon

When: July 22, 5:12 PM MST
Where: Fallon County, 15 mi S of Plevna
Measured: 0.88 in hail
Reported by: TRAINED SPOTTER
Coordinates: 46.433, -105.300

Hail, Carter

When: July 22, 5:25 PM MST
Where: Carter County, 14 mi N of Albion
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.517, -104.536 (the zone’s center; the record gives no point)

Hail, Fallon

When: July 22, 5:38 PM MST
Where: Fallon County, 8 mi S of Baker
Measured: 1.75 in hail
Reported by: LAW ENFORCEMENT
Coordinates: 45.017, -104.833

Thunderstorm Wind, Carter

When: July 22, 5:50 PM MST
Where: Carter County, 6 mi NE of Albion
Reported by: TRAINED SPOTTER
Coordinates: 46.200, -104.517

70 mph thunderstorm winds along with quarter size hail that covered the ground..

Hail, Carter

When: July 22, 7:50 PM MST
Where: Carter County, 20 mi W of Alzada
Measured: 0.88 in hail
Reported by: TRAINED SPOTTER
Coordinates: 46.500, -106.800

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.

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

The same day elsewhere

Every storm in Montana in 2001 Every state in 2001 This day in weather history Warnings in Montana, July 2001

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 2026-09-30. Each event’s entry at NCEI: 5259712, 5258068, 5259295, 5259296, 5259298, 5259297, 5259299, 5258069, 5258070, 5259294, 5259381, 5259300, 5259380, 5259302, 5259303, 5259301, 5259382.