Ketchikan Gateway Borough Disaster Risk

Ketchikan Gateway Borough has a FEMA National Risk Index rating of Very Low, placing it in the 2th percentile nationally out of 3,144 counties. This composite score reflects the county's overall exposure to natural hazards including floods, wildfires, tornadoes, earthquakes, and hurricanes, weighted by expected annual loss and social vulnerability.

Ketchikan Gateway Borough is evaluated for five major natural hazard types: earthquake (31th percentile), flooding (26th percentile), wildfire (11th percentile), tornado (0th percentile). The highest-risk hazard is earthquake at the 31th percentile nationally. These scores are derived from FEMA's National Risk Index, which analyzes expected annual loss, social vulnerability, and community resilience for each hazard type.

Ketchikan Gateway Borough's composite risk percentile is 2th, compared to the Alaska state average of 35th percentile. The state's overall risk rating is Very Low. This means Ketchikan Gateway Borough faces lower natural disaster risk than the typical county in Alaska.

Yes, Ketchikan Gateway Borough's earthquake risk is at the 31th percentile nationally. This is below the national median, indicating relatively lower exposure. For flooding specifically, Ketchikan Gateway Borough is at the 26th percentile.

FEMA's National Risk Index (NRI) calculates risk scores for 18 natural hazard types across all U.S. counties and census tracts. The composite score combines Expected Annual Loss (estimated dollar losses from each hazard), Social Vulnerability (demographic factors affecting disaster impact), and Community Resilience (ability to recover). Percentile scores rank each county against all 3,144 U.S. counties, and risk ratings range from Very Low to Very High.

Ketchikan Gateway Borough's composite risk score of 2th percentile is below the Alaska state average of 35th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is earthquake at the 31th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.