Henderson County Disaster Risk

Henderson County has a FEMA National Risk Index rating of Very Low, placing it in the 18th 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.

Henderson County is evaluated for five major natural hazard types: tornado (29th percentile), earthquake (28th percentile), flooding (25th percentile), hurricane (14th percentile), wildfire (2th percentile). The highest-risk hazard is tornado at the 29th 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.

Henderson County's composite risk percentile is 18th, compared to the Illinois state average of 55th percentile. The state's overall risk rating is Relatively Low. This means Henderson County faces lower natural disaster risk than the typical county in Illinois.

Yes, Henderson County's tornado risk is at the 29th percentile nationally. This is below the national median, indicating relatively lower exposure. For flooding specifically, Henderson County is at the 25th 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.

Henderson County's composite risk score of 18th percentile is below the Illinois state average of 55th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is tornado at the 29th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.