Wapello County Disaster Risk

Wapello County has a FEMA National Risk Index rating of Relatively Low, placing it in the 65th 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.

Wapello County is evaluated for five major natural hazard types: tornado (82th percentile), flooding (69th percentile), wildfire (62th percentile), earthquake (37th percentile), hurricane (10th percentile). The highest-risk hazard is tornado at the 82th 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.

Wapello County's composite risk percentile is 65th, compared to the Iowa state average of 40th percentile. The state's overall risk rating is Very Low. This means Wapello County faces higher natural disaster risk than the typical county in Iowa.

Yes, Wapello County's tornado risk is at the 82th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Wapello County is at the 69th 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.

Wapello County's composite risk score of 65th percentile is above the Iowa state average of 40th percentile. This elevated risk is driven by tornado exposure (82th percentile), along with flooding and wildfire risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.