San Juan County, Washington: hazard risk
FEMA rates San Juan County's overall risk Very Low (score 35.4 of 100, higher than 35% of rated U.S. counties). Its storm record holds 127 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 |
|---|---|---|---|
| Earthquake | Relatively Low | 89.4 | $4.3M |
| Winter Weather | Relatively Low | 60.0 | $79K |
| Coastal Flooding | Relatively Low | 58.4 | $354K |
| Riverine Flooding | Relatively Low | 42.1 | $4.6M |
| Cold Wave | Relatively Low | 31.6 | $398K |
| Landslide | Very Low | 62.3 | $3K |
| Wildfire | Very Low | 41.3 | $25K |
| Volcanic Activity | Very Low | 37.1 | $4 |
| Ice Storm | Very Low | 19.1 | $13K |
| Heat Wave | Very Low | 13.9 | $28K |
| Tsunami | Very Low | 6.2 | $31K |
| Lightning | Very Low | 5.5 | $15K |
| Tornado | Very Low | 4.4 | $13K |
| Hail | Very Low | 1.1 | $808 |
| Strong Wind | Very Low | 1.1 | $1K |
| Drought | No Rating | 0.0 | $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. |
|---|---|---|---|---|---|
| High wind and dust storms | 95 | 0 | $5.7M | 3rd of 39 | 18th of 3,080 |
| Winter storms | 21 | 1 | $1.5M | 10th of 39 | 1240th of 3,077 |
| Drought | 2 | 0 | – | 1st of 39 | 1952nd of 3,063 |
| Floods | 2 | 0 | $517K | 19th of 39 | 2668th of 3,080 |
| Heat | 2 | 0 | – | 9th of 39 | 1372nd of 3,076 |
| Heavy rain | 2 | 0 | $12K | 4th of 39 | 783rd of 3,080 |
| Hurricanes and tropical storms | 1 | 0 | $16K | 1st of 39 | 665th of 1,849 |
| Severe thunderstorm wind | 1 | 0 | $39K | 15th of 39 | 2922nd of 3,080 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full San Juan County record: every hazard by year and month, the deadliest events and FEMA's declarations.