Miami County Disaster Risk

Miami County has a FEMA National Risk Index rating of Relatively Low, placing it in the 61th 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.

Miami County is evaluated for five major natural hazard types: earthquake (80th percentile), tornado (75th percentile), flooding (70th percentile), hurricane (34th percentile), wildfire (21th percentile). The highest-risk hazard is earthquake at the 80th 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.

Miami County's composite risk percentile is 61th, compared to the Ohio state average of 55th percentile. The state's overall risk rating is Relatively Low. This means Miami County faces higher natural disaster risk than the typical county in Ohio.

Yes, Miami County's earthquake risk is at the 80th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Miami County is at the 70th 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.

Miami County's composite risk score of 61th percentile is above the Ohio state average of 55th percentile. This elevated risk is driven by earthquake exposure (80th percentile), along with tornado and flooding risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.