Mono County, California: hazard risk
FEMA rates Mono County's overall risk Relatively Low (score 46.5 of 100, higher than 46% of rated U.S. counties); 1 of its 14 hazards are rated Relatively High or Very High, led by avalanche. Its storm record holds 915 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 | 86.4 | $1.3M |
| Wildfire | Relatively Moderate | 91.2 | $1.8M |
| Winter Weather | Relatively Moderate | 84.7 | $306K |
| Drought | Relatively Moderate | 78.1 | $940K |
| Earthquake | Relatively Low | 89.0 | $5.1M |
| Volcanic Activity | Relatively Low | 88.3 | $12K |
| Landslide | Relatively Low | 74.9 | $10K |
| Riverine Flooding | Relatively Low | 46.9 | $6.9M |
| Lightning | Relatively Low | 27.2 | $111K |
| Heat Wave | Very Low | 23.4 | $96K |
| Strong Wind | Very Low | 9.9 | $80K |
| Hail | Very Low | 3.2 | $7K |
| Tornado | Very Low | 2.5 | $5K |
| Cold Wave | Very Low | 2.4 | $0 |
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 | 400 | 2 | $188K | 14th of 57 | 1407th of 3,077 |
| High wind and dust storms | 358 | 3 | $8.2M | 23rd of 57 | 462nd of 3,080 |
| Heavy rain | 71 | 0 | – | 18th of 57 | 602nd of 3,080 |
| Landslides and avalanches | 30 | 2 | $320K | 16th of 57 | 95th of 2,278 |
| Floods | 24 | 0 | $669K | 51st of 57 | 2850th of 3,080 |
| Hail | 10 | 0 | – | 36th of 57 | 2954th of 3,080 |
| Severe thunderstorm wind | 8 | 0 | $820 | 37th of 57 | 2992nd of 3,080 |
| Wildfires | 6 | 1 | $71K | 51st of 57 | 897th of 2,972 |
| Lightning | 2 | 0 | – | 32nd of 57 | 2320th of 3,080 |
| Extreme cold | 1 | 0 | – | 55th of 57 | 2864th of 3,076 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Mono County record: every hazard by year and month, the deadliest events and FEMA's declarations.