Whatcom County, Washington: hazard risk

FEMA rates Whatcom County's overall risk Relatively Moderate (score 91.0 of 100, higher than 90% of rated U.S. counties); 2 of its 17 hazards are rated Relatively High or Very High, led by avalanche, ice storm. Its storm record holds 455 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).

National Risk Index (December 2025), Whatcom County, by FEMA's rating, then score
HazardRisk ratingScoreExpected annual loss
AvalancheVery High98.2$6.9M
Ice StormVery High97.1$2.7M
EarthquakeRelatively Moderate97.8$51M
LandslideRelatively Moderate97.7$559K
Volcanic ActivityRelatively Moderate93.2$128K
Riverine FloodingRelatively Moderate88.9$40M
Cold WaveRelatively Moderate86.0$6.1M
Winter WeatherRelatively Moderate82.5$276K
Heat WaveRelatively Moderate78.9$1.7M
Coastal FloodingRelatively Moderate63.2$794K
LightningRelatively Moderate62.2$421K
WildfireVery Low61.7$110K
TsunamiVery Low23.1$255K
DroughtVery Low14.5$503
TornadoVery Low13.1$127K
Strong WindVery Low2.2$12K
HailVery Low2.0$3K

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

Storm records by hazard, with the county's rank by days with a record per 1,000 sq mi over each hazard's complete period
HazardRecordsDeathsDamageRank in stateRank in U.S.
Winter storms2182$3.2M17th of 391575th of 3,077
High wind and dust storms1589$18M12th of 39555th of 3,080
Heat200–13th of 391576th of 3,076
Floods181$55M27th of 392779th of 3,080
Landslides and avalanches1311$5.5M12th of 39126th of 2,278
Extreme cold60–17th of 392565th of 3,076
Heavy rain60$242K18th of 391679th of 3,080
Drought40–16th of 392445th of 3,063
Hurricanes and tropical storms40$1.6M5th of 39932nd of 1,849
Severe thunderstorm wind30$3K31st of 393030th of 3,080
Lightning10$6K27th of 392354th of 3,080
Tornadoes10$16K26th of 392957th of 3,080
Wildfires10$2.8M34th of 391238th 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 Whatcom County record: every hazard by year and month, the deadliest events and FEMA's declarations.

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