Granite County, Montana: hazard risk
FEMA rates Granite County's overall risk Very Low (score 9.4 of 100, higher than 9% of rated U.S. counties); 1 of its 14 hazards are rated Relatively High or Very High, led by avalanche. Its storm record holds 759 events since 1950.
FEMA's rating for each hazard
These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.
FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).
| Hazard | Risk rating | Score | Expected annual loss |
|---|---|---|---|
| Avalanche | Relatively High | 86.3 | $1.0M |
| Landslide | Relatively Moderate | 91.9 | $68K |
| Wildfire | Relatively Low | 88.6 | $1.0M |
| Winter Weather | Relatively Low | 48.8 | $56K |
| Cold Wave | Relatively Low | 34.4 | $470K |
| Ice Storm | Relatively Low | 29.1 | $27K |
| Earthquake | Very Low | 37.7 | $120K |
| Drought | Very Low | 17.0 | $2K |
| Riverine Flooding | Very Low | 11.1 | $1.3M |
| Lightning | Very Low | 8.2 | $24K |
| Hail | Very Low | 6.5 | $17K |
| Heat Wave | Very Low | 4.2 | $4K |
| Strong Wind | Very Low | 3.2 | $15K |
| Tornado | Very Low | 2.7 | $5K |
Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.
What the record holds
| Hazard | Records | Deaths | Damage | Rank in state | Rank in U.S. |
|---|---|---|---|---|---|
| Winter storms | 557 | 16 | $370K | 5th of 56 | 579th of 3,077 |
| High wind and dust storms | 75 | 0 | $1.6M | 29th of 56 | 1183rd of 3,080 |
| Extreme cold | 45 | 0 | – | 8th of 56 | 1104th of 3,076 |
| Hail | 31 | 0 | $16K | 49th of 56 | 2781st of 3,080 |
| Floods | 20 | 0 | $222K | 25th of 56 | 2776th of 3,080 |
| Severe thunderstorm wind | 15 | 0 | – | 53rd of 56 | 2867th of 3,080 |
| Landslides and avalanches | 7 | 3 | $7K | 9th of 56 | 180th of 2,278 |
| Heat | 2 | 0 | – | 14th of 56 | 2306th of 3,076 |
| Heavy rain | 2 | 0 | $1K | 44th of 56 | 2175th of 3,080 |
| Tornadoes | 2 | 0 | – | 38th of 56 | 2896th of 3,080 |
| Wildfires | 2 | 0 | – | 33rd of 56 | 1091st of 2,972 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Granite County record: every hazard by year and month, the deadliest events and FEMA's declarations.