Barnwell County Disaster Risk

Barnwell County has a FEMA National Risk Index rating of Relatively Low, placing it in the 46th 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.

Barnwell County is evaluated for five major natural hazard types: hurricane (85th percentile), earthquake (81th percentile), tornado (66th percentile), wildfire (60th percentile), flooding (35th percentile). The highest-risk hazard is hurricane at the 85th 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.

Barnwell County's composite risk percentile is 46th, compared to the South Carolina state average of 71th percentile. The state's overall risk rating is Relatively Low. This means Barnwell County faces lower natural disaster risk than the typical county in South Carolina.

Yes, Barnwell County's hurricane risk is at the 85th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Barnwell County is at the 35th 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.

Barnwell County's composite risk score of 46th percentile is below the South Carolina state average of 71th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is hurricane at the 85th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.