Adams County, Idaho: hazard risk
FEMA rates Adams County's overall risk Very Low (score 39.6 of 100, higher than 39% of rated U.S. counties); 1 of its 15 hazards are rated Relatively High or Very High, led by avalanche. Its storm record holds 224 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 | 86.0 | $913K |
| Wildfire | Relatively Moderate | 96.7 | $5.4M |
| Landslide | Relatively Moderate | 91.6 | $58K |
| Winter Weather | Relatively Low | 41.0 | $39K |
| Riverine Flooding | Relatively Low | 35.9 | $3.5M |
| Earthquake | Very Low | 37.4 | $106K |
| Heat Wave | Very Low | 18.3 | $43K |
| Volcanic Activity | Very Low | 16.9 | $0 |
| Drought | Very Low | 13.2 | $50 |
| Lightning | Very Low | 9.5 | $26K |
| Cold Wave | Very Low | 5.4 | $18K |
| Hail | Very Low | 3.9 | $7K |
| Tornado | Very Low | 2.9 | $5K |
| Strong Wind | Very Low | 2.8 | $11K |
| Ice Storm | Very Low | 2.7 | $860 |
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 | 164 | 1 | – | 25th of 44 | 1417th of 3,077 |
| High wind and dust storms | 14 | 0 | $19K | 38th of 44 | 2467th of 3,080 |
| Severe thunderstorm wind | 13 | 0 | $68K | 37th of 44 | 2853rd of 3,080 |
| Floods | 9 | 0 | $465K | 34th of 44 | 2885th of 3,080 |
| Heavy rain | 8 | 0 | – | 17th of 44 | 1665th of 3,080 |
| Hail | 7 | 0 | – | 38th of 44 | 2904th of 3,080 |
| Tornadoes | 3 | 0 | $407K | 27th of 44 | 2802nd of 3,080 |
| Extreme cold | 2 | 0 | – | 37th of 44 | 2816th of 3,076 |
| Landslides and avalanches | 1 | 1 | – | 30th of 44 | 378th 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 Adams County record: every hazard by year and month, the deadliest events and FEMA's declarations.