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Tornado History

Montana Tornado History

This page summarizes tornado history for Montana. The local dataset contains 410 tornado records from 1952 through 2024, with a strongest listed rating of F3 (Severe damage) and at least $56.2M in reported property damage. The latest tornado record in this group is July 12, 2024. Across these records, NOAA lists 4 deaths and 29 injuries.

Key Tornado Statistics

Total Tornadoes410
Total Deaths4
Total Injuries29
Property Damage$56.2M
Avg Length4.2 mi
Avg Width59 yd

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Key Tornado Facts for Montana

Top local patterns from the historical tornado records in this group.

Average 5.6 tornadoes per year (3.8/yr in last decade)
June is the peak tornado month with 148 recorded events
Deadliest tornado: EF3 in Montana with 2 deaths
1991 was the most active year with 30 tornadoes
The 1990s had the most tornado activity (103 events)
Longest tornado: 300 miles in Montana
Widest tornado: 1,320.0 yards in Montana
Most tornadoes in one day: 11 on Jul 5, 1988

Monthly Distribution

Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.

January
February
March
April
May
June
July
August
September
October
November
December

Summary: In Montana, June is the most active month with 148 tornadoes.

Annual Tornado Trend

Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.

3020100

Summary: 1991 was the most active year with 30 recorded tornadoes.

Tornado Intensity Distribution

Shows the breakdown of tornadoes by EF/F rating.

F0
EF0
F1
EF1
F2
EF2
F3
EF3
Unknown
EFU

Summary: F0 tornadoes are the most common in this group, with 175 recorded events.

Property Damage Trends

Visualizes reported property damage over time. Bars use a log-like scale so very large damage years do not flatten the rest of the chart.

$30.6M$3.1M$306K$0

Summary: The highest reported property damage year in this group is 2010 with at least $30.6M in NOAA-listed property damage.

Tornado Count By County

Compares the counties with the most tornado records in this state dataset.

Valley
Fergus
Yellowstone
Carter
Powder River
Roosevelt
Judith Basin
Dawson
Chouteau
Fallon
Phillips
Cascade
Beaverhead
Richland
Garfield
Daniels
Big Horn
Rosebud
Sheridan
Wibaux

Summary: Valley County has the highest count in this state group with 40 tornado records.

Historical Track Sketch

EF3 June 11, 20162016EF3 July 26, 20102010F3 July 19, 19521952F3 July 5, 19881988F3 July 5, 19881988F3 July 5, 19881988EF3 June 17, 20142014EF2 June 20, 20102010F2 August 14, 19991999F2 July 2, 19581958F2 April 24, 19941994EF2 July 15, 20132013F2 August 4, 19621962F2 April 25, 19641964EF2 June 21, 2010F2 July 8, 2002F2 April 24, 1994EF2 July 2, 2010F2 August 26, 1954F2 May 19, 1962F2 July 10, 1965F2 July 11, 1965F2 September 21, 1969F2 June 23, 1975F2 June 25, 1975F2 June 25, 1975F2 June 27, 1975F2 June 8, 1976F2 June 25, 1996EF2 June 16, 2010F2 May 27, 1954F2 August 7, 1962F2 June 11, 1972F2 May 7, 1982F2 May 4, 1986F2 June 23, 1953F2 July 25, 1966F2 June 11, 1972F2 June 14, 1962F2 July 18, 1962F2 July 20, 1964F2 July 2, 1966F2 June 25, 1975F2 June 25, 1975F2 June 30, 1975F2 May 28, 1981F2 June 20, 1999F2 July 25, 2001EF2 June 28, 2018EF2 July 18, 2022F1 June 6, 1994EF1 June 29, 2011F1 July 22, 1979F1 May 25, 1980F1 May 25, 1980F1 May 25, 1980F1 June 28, 1982F1 July 9, 1983F1 June 21, 1984F1 June 21, 1991F1 June 21, 1999EF1 June 21, 2010F1 July 4, 1998EF1 May 20, 2011F1 June 19, 1998F1 July 8, 2002EF1 June 30, 2015F1 August 23, 1998EF1 June 16, 2010F1 July 3, 1998F1 July 6, 1955F1 June 3, 1971F1 June 13, 1984F1 July 5, 1988F1 July 4, 1991F1 July 4, 1991F1 July 9, 1991EF1 August 10, 2007F1 July 21, 1999F1 July 4, 1998© OpenStreetMap contributors

Notable Tornado Records

The table highlights the strongest and most damaging records in this page's local dataset. Damage totals are NOAA-reported minimum estimates where available.

DateRatingAreaLengthWidthDeathsInjuriesMin. property damage
June 11, 2016EF3Fallon, Montana3 mi200 yd07$1.5M
July 26, 2010EF3Sheridan, Montana18 mi880 yd21$300K
July 19, 1952F3Wibaux, Montana9.1 mi33 yd12$250K
July 5, 1988F3Chouteau, Montana3 mi200 yd02$250K
July 5, 1988F3Chouteau, Montana12 mi200 yd00$25K
July 5, 1988F3Chouteau, Montana10 mi200 yd00$2K
June 17, 2014EF3Carter, Montana10 mi880 yd00N/A
June 20, 2010EF2Yellowstone, Montana0.69 mi120 yd00$30.0M
August 14, 1999F2Fergus, Montana5 mi100 yd03$4.0M
July 2, 1958F2Yellowstone, Montana0.5 mi50 yd02$2.5M
April 24, 1994F2Judith Basin, Montana1.5 mi100 yd00$500K
July 15, 2013EF2Roosevelt, Montana22.99 mi440 yd00$500K

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Source And Limits

Data source: NOAA/NCEI. TornadoTrace summarizes historical records for screening and research. Coordinates, damage estimates, narratives, and event details can be approximate, incomplete, revised, or missing. Do not use this page as legal, insurance, engineering, real estate, emergency management, or safety advice.