Natural Disaster Risk in Sumas

Natural Hazard Profile: Sumas, Washington

Sumas, in Whatcom County, is a town of roughly 3,279 residents situated in the Pacific Northwest. Its oceanic climate brings mild, rainy winters west of the Cascades and semi-arid conditions to the east, and in particular a critical wildfire period in eastern Washington each summer. These conditions collectively define the natural hazard environment that Sumas residents and property owners must navigate.

Sumas's overall natural disaster risk is rated 6.9/10 (High) by FEMA's National Risk Index. Snow avalanche exposure tops the local risk profile, with the area's mountain setting and annual snowfall loading producing regular avalanche cycles on steep slopes. Secondary hazards include tsunami and volcano.

Within Washington, Sumas's risk is, slightly above the 5.8/10 state average. Nationally, it ranks well above the U.S. national average of 4.5/10. FEMA's analysis of Whatcom County identifies avalanche as the foremost hazard, followed by tsunami and volcano. These rankings reflect the relative frequency and severity of each hazard type in the local environment.

With a high natural disaster risk rating, Sumas residents benefit from taking preparedness seriously. Reviewing insurance coverage for avalanche and secondary hazards, registering for emergency alerts, and maintaining a household emergency kit are practical steps that can significantly reduce impact during a major event.