Warren County Disaster Risk

Warren County has a FEMA National Risk Index rating of Very Low, placing it in the 15th 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.

Warren County is evaluated for five major natural hazard types: earthquake (34th percentile), tornado (28th percentile), hurricane (17th percentile), flooding (11th percentile), wildfire (0th percentile). The highest-risk hazard is earthquake at the 34th 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.

Warren County's composite risk percentile is 15th, compared to the Illinois state average of 55th percentile. The state's overall risk rating is Relatively Low. This means Warren County faces lower natural disaster risk than the typical county in Illinois.

Yes, Warren County's earthquake risk is at the 34th percentile nationally. This is below the national median, indicating relatively lower exposure. For flooding specifically, Warren County is at the 11th 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.

Warren County's composite risk score of 15th 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 earthquake at the 34th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.