Somerset County Disaster Risk

Somerset County has a FEMA National Risk Index rating of Relatively Low, placing it in the 68th 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.

Somerset County is evaluated for five major natural hazard types: hurricane (86th percentile), flooding (62th percentile), earthquake (59th percentile), wildfire (22th percentile), tornado (16th percentile). The highest-risk hazard is hurricane at the 86th 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.

Somerset County's composite risk percentile is 68th, compared to the Maine state average of 57th percentile. The state's overall risk rating is Relatively Low. This means Somerset County faces higher natural disaster risk than the typical county in Maine.

Yes, Somerset County's hurricane risk is at the 86th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Somerset County is at the 62th 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.

Somerset County's composite risk score of 68th percentile is above the Maine state average of 57th percentile. This elevated risk is driven by hurricane exposure (86th percentile), along with flooding and earthquake risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.