Sitka City and Borough Disaster Risk

Sitka City and Borough has a FEMA National Risk Index rating of Very Low, placing it in the 24th 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.

Sitka City and Borough is evaluated for five major natural hazard types: earthquake (84th percentile), flooding (34th percentile), wildfire (9th percentile), tornado (0th percentile). The highest-risk hazard is earthquake at the 84th 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.

Sitka City and Borough's composite risk percentile is 24th, compared to the Alaska state average of 35th percentile. The state's overall risk rating is Very Low. This means Sitka City and Borough faces lower natural disaster risk than the typical county in Alaska.

Yes, Sitka City and Borough's earthquake risk is at the 84th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Sitka City and Borough is at the 34th 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.

Sitka City and Borough's composite risk score of 24th 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 84th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.