Silver Bow County, Montana: hazard risk
FEMA rates Silver Bow County's overall risk Very Low (score 38.0 of 100, higher than 38% of rated U.S. counties); 1 of its 14 hazards are rated Relatively High or Very High, led by winter weather. Its storm record holds 465 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 |
|---|---|---|---|
| Winter Weather | Relatively High | 92.4 | $599K |
| Landslide | Relatively Moderate | 90.4 | $72K |
| Cold Wave | Relatively Moderate | 81.9 | $5.0M |
| Lightning | Relatively Moderate | 61.9 | $437K |
| Earthquake | Relatively Low | 87.4 | $4.3M |
| Wildfire | Relatively Low | 80.7 | $527K |
| Avalanche | Very Low | 43.0 | $379 |
| Hail | Very Low | 27.2 | $127K |
| Riverine Flooding | Very Low | 21.7 | $3.2M |
| Drought | Very Low | 14.5 | $526 |
| Heat Wave | Very Low | 13.9 | $38K |
| Ice Storm | Very Low | 13.5 | $10K |
| Strong Wind | Very Low | 10.0 | $88K |
| Tornado | Very Low | 9.8 | $74K |
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 | 283 | 8 | $291K | 2nd of 56 | 311th of 3,077 |
| High wind and dust storms | 53 | 0 | $1.4M | 13th of 56 | 569th of 3,080 |
| Hail | 43 | 0 | $84K | 21st of 56 | 2568th of 3,080 |
| Extreme cold | 29 | 0 | – | 1st of 56 | 643rd of 3,076 |
| Severe thunderstorm wind | 27 | 0 | $115K | 17th of 56 | 2669th of 3,080 |
| Floods | 20 | 0 | $144K | 1st of 56 | 2271st of 3,080 |
| Heavy rain | 4 | 0 | – | 6th of 56 | 1454th of 3,080 |
| Landslides and avalanches | 4 | 1 | $7K | 3rd of 56 | 135th of 2,278 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Silver Bow County record: every hazard by year and month, the deadliest events and FEMA's declarations.