NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Florence, 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 Florence, Montana since records began in 1851. Since 1950, 2 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 2
- 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 Florence
The highest rating among the 2 tornadoes within 25 miles is F0, reached 2 times; the most recent, on August 15, 1990, came within 15 miles. Of the 73 Montana cities on this site, 73% have more tornadoes within 25 miles than Florence. Hail has been reported within 10 miles 28 times since 1972, with stones up to 1.75 inches (golf ball size). Florence has more hail reports within 10 miles than 54% of the 73 Montana cities.
Compare Florence's storm record with another city →
Tornadoes within 25 miles of Florence
By decade
- 1990s1
- 1980s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Aug 15, 1990 | F0 | 15 mi | 0.1 mi | 0 / 0 |
| Jul 20, 1983 | F0 | 18 mi | 2 mi | 0 / 0 |
The strongest 2 of 2, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Florence
The Storm Prediction Center has 28 hail reports within 10 miles of Florence since 1972, made on 20 separate days. Of these, 18 were 1 inch across or larger, and none reached 2 inches. The largest size, 1.75 inches (golf ball size), was reported on 2 days, most recently August 8, 2003. The most recent report is from July 31, 2025. July has the most reports, 12.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Florence
The nearest NOAA station with 1991–2020 climate normals is Stevensville, MT, 9 miles south of Florence at 3,375 feet. July is the warmest, with an average high of 85°F and low of 49°F; December is the coolest, at 33°F and 19°F. Highs reach 90°F on about 28 days a year, almost all from June to September. Lows fall below freezing on about 175 nights a year. Snowfall averages 17.1 inches a year, most of it in December. That 12.4 inches is more than at 10 of the 58 Montana stations used on this site (17%). Lolo, 15 miles northwest, has its own station (Missoula International Airport, MT): 14.3 inches a year, 1.9 more than here, and the same July average high, 85°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 35 | 19 | 1.0 | 3 | 4.0 |
| Feb | 38 | 21 | 0.9 | 3 | 3.0 |
| Mar | 50 | 26 | 0.8 | 3 | 1.5 |
| Apr | 58 | 32 | 0.9 | 3 | 0.1 |
| May | 68 | 39 | 1.5 | 5 | 0.0 |
| Jun | 75 | 45 | 1.6 | 5 | 0.0 |
| Jul | 85 | 49 | 0.8 | 2 | 0.0 |
| Aug | 84 | 47 | 0.8 | 3 | 0.0 |
| Sep | 74 | 40 | 0.8 | 3 | 0.0 |
| Oct | 58 | 32 | 1.0 | 3 | 0.1 |
| Nov | 43 | 25 | 1.2 | 3 | 1.6 |
| Dec | 33 | 19 | 1.1 | 4 | 6.8 |
| Year | 58 | 33 | 12.4 | 38 | 17.1 |
Averages for 1991–2020 at Stevensville, MT (3,375 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 Florence
Since 1996, the National Weather Service has logged 30 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Florence: 19 thunderstorm wind reports, 7 floods, 3 heavy rain events and 1 lightning strike. They killed 0 people and injured 1, and the NWS estimated $141,000 in property and crop damage. The strongest thunderstorm gust on record here was 82 mph, on September 1, 2004.
May 9, 2013: lightning strike 7 miles from the centre of Florence — 1 injured.
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 Florence's ZIP code 59833 have filed 10 claims with the National Flood Insurance Program since 1997, and were paid $16,000 for buildings and contents, in the dollars of each year. Of the 26 Montana cities on this site with 10 or more claims, 0 have fewer than Florence.
Ravalli County, which includes Florence, has been named in 13 federal disaster or emergency declarations since 1996, 7 of them major disasters (by incident: 5 fires, 3 severe storms, 2 biological emergencies, 1 flood). The latest major disaster declaration was Severe Winter Storm and Straight-Line Winds, on April 7, 2026. FEMA's National Risk Index gives Ravalli County a Relatively Low rating for natural hazard risk overall; by hazard: Relatively Moderate for lightning; Relatively Low for inland flooding and heat waves; Very Low for tornadoes, hail and strong wind. It models the county's expected loss from all 18 hazards it covers at $37.0 million a year, the 6th highest of 56 Montana counties; of the hazards above, the largest share, $6.6 million (18%), 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 Florence
- Stevensville, MT8 mi
- Lolo, MT15 mi
- Missoula, MT16 mi
- Victor, MT18 mi
- Corvallis, MT23 mi
- Bonner, MT27 mi
- Frenchtown, MT29 mi
- Hamilton, MT30 mi
- Arlee, MT36 mi
- St Ignatius, MT47 mi
- Darby, MT56 mi
- Ronan, MT62 mi
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