Natural Disaster Risk in Aleutians West County

Natural Hazard Profile: Aleutians West County, Alaska

Aleutians West County, in Alaska, the northernmost U.S. state in Alaska, is characterized by its subarctic climate — subarctic conditions with extreme cold winters and brief summers. The county faces severe winter storms, and its FEMA risk assessment establishes the hazard baseline shared by all the towns and cities it contains.

According to FEMA's National Risk Index, Aleutians West County carries an overall risk score of 4.1/10, placing it in the moderate category. Tsunami risk is the primary coastal hazard, driven by the area's proximity to seismically active offshore zones capable of generating ocean waves that inundate low-lying coastlines. The area also faces notable exposure to volcano and avalanche.

Within Alaska, Aleutians West County's risk is, slightly below the 4.6/10 state average. Nationally, it ranks near the U.S. national average of 4.5/10. FEMA's analysis of Aleutians West County identifies tsunami as the foremost hazard, followed by volcano and avalanche. These rankings reflect the relative frequency and severity of each hazard type in the local environment.

With a moderate risk rating, Aleutians West County residents are well-served by maintaining standard preparedness practices — an emergency supply kit, awareness of local hazard seasonality, and insurance that covers the top local risks. Periodic review of coverage for tsunami is recommended.