Anderson County Disaster Risk
Anderson County, South Carolina
FEMA Risk Rating
Relatively Moderate
National Percentile
87th
of 3,144 counties
State Rank
#14
of 46 (1 = highest risk)
Flood Risk
88th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Moderate
Higher than 88% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Relatively Low
Higher than 47% of US counties
Tornado
Tornado and severe thunderstorm risk
Moderate
Higher than 91% of US counties
Earthquake
Seismic activity and ground shaking risk
Moderate
Higher than 87% of US counties
Hurricane
Tropical cyclone and hurricane risk
Relatively Low
Higher than 78% of US counties
Risk Overview
About Natural Disaster Risk in Anderson County, South Carolina
Anderson faces substantial national risk
Anderson County's composite risk score of 87.18 earns a Relatively Moderate rating, placing it among higher-risk counties across the United States. The county confronts significant combined exposure, particularly in tornado and earthquake hazards.
Among South Carolina's highest-risk counties
At 87.18, Anderson's composite score substantially exceeds South Carolina's state average of 70.75, ranking it among the state's riskier counties. The county's tornado risk (90.81) is notably one of the highest in the state.
Riskiest county in the upstate region
Anderson's 87.18 score far exceeds nearby Abbeville (45.36) and Barnwell (45.83), making it the highest-risk county in its immediate vicinity. Only a handful of South Carolina counties register comparable or higher composite risk ratings.
Tornadoes and floods pose greatest threats
Tornado risk dominates at 90.81, making Anderson one of South Carolina's most tornado-prone counties. Flood risk (88.14) and earthquake risk (87.44) complete a dangerous trio, each exceeding 87 on the risk scale.
Prioritize earthquake and flood coverage
Secure a dedicated earthquake insurance policy—standard homeowners policies exclude seismic damage, yet Anderson's 87.44 earthquake score reflects genuine exposure. Add comprehensive flood insurance and ensure your policy covers high-wind damage from tornadoes, given the county's 90.81 tornado risk.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Anderson County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Anderson County
Risk Verdict
At the 87th percentile nationally, Anderson County sits in the upper half of U.S. counties for natural disaster exposure. At this risk level, having a documented household preparedness plan — not just awareness — is the meaningful next step for Anderson County residents.
Hazard Breakdown
Tornado risk is Anderson County's dominant natural hazard, ranked at the 91th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 88th percentile nationally. Additional tracked hazards include earthquake (87th percentile), hurricane (78th percentile), wildfire (47th percentile).
Preparedness Context
Tornado exposure at the 91th percentile nationally makes Anderson County a county where a battery-powered weather radio — not just smartphone apps — is a worthwhile household investment, given that mobile networks often fail during severe storms. Alongside tornado exposure, flood at the 88th percentile nationally means Anderson County households face multi-hazard severe-weather seasons that benefit from a single integrated emergency plan covering both threats. In Anderson County, tornado watches indicate favorable atmospheric conditions while warnings mean rotation has been detected — households benefit from understanding this distinction so they shelter immediately on a warning, not after seeking visual confirmation.
Regional Context
The South Carolina county average is 16.4 composite points below Anderson County's score, a gap that reflects the county's elevated position in the state's hazard distribution.
Is your household prepared for Anderson County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Anderson County, SC?
What types of natural hazards affect Anderson County?
How does Anderson County risk compare to the South Carolina average?
Is Anderson County at risk for tornado?
How is natural disaster risk measured?
Why is Anderson County higher risk than average?
Data Source
Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.
Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.