NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Glasgow, MT
Every tropical system within 75 miles since 1851 and every tornado within 25 miles since 1950.
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
No tropical storm or hurricane has passed within 75 miles of Glasgow, Montana since records began in 1851. Since 1950, 17 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 17
- EF3 or stronger
- 0
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
no recorded deaths
What the records show for Glasgow
The highest rating among the 17 tornadoes within 25 miles is F1, reached 2 times; the most recent, on July 10, 1983, came within 12 miles. Of the 17, one had a path within 5 miles of the city centre, and 8 have come since 2000. July has had the most tornadoes, 7. The most recent tornado was on June 9, 2023. Glasgow has more tornadoes within 25 miles than 89% of the 73 Montana cities on this site. Hail has been reported within 10 miles 64 times since 1955, with stones up to 4.5 inches (grapefruit size). Glasgow has more hail reports within 10 miles than 83% of the 73 Montana cities.
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Tornadoes within 25 miles of Glasgow
By decade
- 2020s2
- 2000s6
- 1990s6
- 1980s2
- 1950s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jul 10, 1983 | F1 | 12 mi | 1 mi | 0 / 0 |
| Jun 18, 1958 | F1 | 14 mi | 0.1 mi | 0 / 0 |
| May 20, 2020 | EF0 | 9 mi | 0.82 mi | 0 / 0 |
| Jul 8, 2002 | F0 | 16 mi | 0.5 mi | 0 / 0 |
| Jul 20, 2001 | F0 | 24 mi | 28 mi | 0 / 0 |
| Jul 20, 2001 | F0 | 21 mi | 29 mi | 0 / 0 |
| Jul 10, 2000 | F0 | 20 mi | 0.5 mi | 0 / 0 |
| Jul 3, 2000 | F0 | 23 mi | 0.5 mi | 0 / 0 |
| Jul 2, 2000 | F0 | 12 mi | 0.5 mi | 0 / 0 |
| Jun 21, 1999 | F0 | 15 mi | 0.1 mi | 0 / 0 |
| Aug 26, 1995 | F0 | 19 mi | 0.1 mi | 0 / 0 |
| Aug 26, 1995 | F0 | 11 mi | 0.1 mi | 0 / 0 |
The strongest 12 of 17, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Glasgow
The Storm Prediction Center has 64 hail reports within 10 miles of Glasgow since 1955, made on 37 separate days. Of these, 46 were 1 inch across or larger, and 14 reached 2 inches. The largest, 4.5 inches (grapefruit size), fell on July 21, 1999. The most recent report is from June 15, 2025. June has the most reports, 27.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Glasgow
The nearest NOAA station with 1991–2020 climate normals is Glasgow International Airport, MT, 5 miles northeast of Glasgow at 2,285 feet. July is the warmest, with an average high of 86°F and low of 59°F; January is the coolest, at 24°F and 6°F. Highs reach 90°F on about 26 days a year, almost all from June to September. Lows fall below freezing on about 181 nights a year. Snowfall averages 40.7 inches a year, most of it in January. That 13.5 inches is more than at 21 of the 58 Montana stations used on this site (36%).
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 24 | 6 | 0.4 | 2 | 9.8 |
| Feb | 28 | 9 | 0.4 | 1 | 6.2 |
| Mar | 42 | 21 | 0.5 | 2 | 5.6 |
| Apr | 57 | 33 | 1.0 | 3 | 2.5 |
| May | 68 | 43 | 2.2 | 5 | 0.9 |
| Jun | 76 | 53 | 2.8 | 6 | 0.0 |
| Jul | 86 | 59 | 2.0 | 5 | 0.0 |
| Aug | 85 | 57 | 1.3 | 3 | 0.0 |
| Sep | 73 | 47 | 1.1 | 3 | 0.0 |
| Oct | 57 | 34 | 0.9 | 2 | 1.5 |
| Nov | 40 | 21 | 0.5 | 2 | 5.9 |
| Dec | 27 | 10 | 0.4 | 1 | 8.3 |
| Year | 55 | 33 | 13.5 | 34 | 40.7 |
Averages for 1991–2020 at Glasgow International Airport, MT (2,285 ft), from NOAA NCEI U.S. Climate Normals. Normals describe the station; the farther a place is from it, and the bigger the difference in height, the more its weather can differ.
Floods, thunderstorm wind and lightning near Glasgow
Since 1996, the National Weather Service has logged 164 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Glasgow: 126 thunderstorm wind reports, 18 floods, 10 flash floods, 6 heavy rain events and 4 lightning strikes. None is recorded as killing or injuring anyone; the NWS estimated $742,000 in property and crop damage. The strongest thunderstorm gust on record here was 115 mph, on July 17, 1997. July has had the most flash floods, 4 of 10. Of the 42 Montana cities on this site with a flash flood on record, 39 have had fewer than Glasgow.
July 3, 2000: thunderstorm wind 6 miles from the centre of Glasgow — $350,000 damage.
NWS: “Severe thunderstorm winds in excess of 80 mph knocked down power lines and trees and caused roof damage. A double wide trailer 8 miles north of Glasgow was almost completely destroyed by the winds.”
August 24, 2014: flash flood 5 miles from the centre of Glasgow — $150,000 damage.
NWS: “The initial report of flash flooding came from an NWS employee who reported that Cherry Creek on the northwest side of Glasgow has risen out of its banks and is flooding with several inches of water over Skylark Road at Martin Coulee.”
August 28, 1997: thunderstorm wind 4 miles from the centre of Glasgow — $100,000 damage.
NWS: “Thunderstorm winds downed power lines, peeled a roof off of a local lumber yard, twisted road signs and blew down large trees. Some residents north of Glasgow were without power for two days.”
Source: NOAA NCEI Storm Events Database, events whose starting point is on record, 1996 to June 30, 2026. Damage is the NWS estimate in the dollars of the year, not insured losses, and NWS notes that some reports are unverified.
Flood insurance claims, disaster declarations and FEMA risk ratings
Flood insurance policyholders in Glasgow's ZIP code 59230 have filed 211 claims with the National Flood Insurance Program since 1978, and were paid $1.3 million for buildings and contents, in the dollars of each year. The year with the most claims was 2011, with 71. 1% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 26 Montana cities on this site with 10 or more claims, 25 have fewer than Glasgow.
Valley County, which includes Glasgow, has been named in 13 federal disaster or emergency declarations since 1986, 11 of them major disasters (by incident: 6 floods, 3 severe storms, 2 biological emergencies, 1 hurricane). The latest major disaster declaration was Severe Winter Storm and Straight-Line Winds, on April 7, 2026. FEMA's National Risk Index gives Valley County a Very Low rating for natural hazard risk overall; by hazard: Relatively Moderate for hail; Relatively Low for strong wind; Very Low for tornadoes, inland flooding, lightning and heat waves. It models the county's expected loss from all 18 hazards it covers at $11.2 million a year, the 19th highest of 56 Montana counties; of the hazards above, the largest share, $3.9 million (35%), is from inland flooding.
Claims: FEMA, OpenFEMA Dataset FIMA NFIP Redacted Claims – v3, summed over ZIP codes; payments in the dollars of each year, not adjusted for inflation. Declarations: Disaster Declarations Summaries – v2, by county. Retrieved October 25, 2026. This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Risk ratings: FEMA, National Risk Index county table, December 2025 (v1.20), retrieved October 26, 2026; ratings compare counties nationwide, are meant for planning and are no substitute for a local risk assessment. This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
What counts as a pass, the distances and the sources: how this storm history is built.
Cities near Glasgow
- Wolf Point, MT48 mi
- Malta, MT52 mi
- Poplar, MT71 mi
- Harlem, MT96 mi
- Chinook, MT116 mi
- Glendive, MT117 mi
- Sidney, MT120 mi
- Miles City, MT132 mi
- Williston, ND137 mi
- Roundup, MT141 mi
- Forsyth, MT143 mi
- Havre, MT145 mi
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