Clark County Disaster Risk
Clark County, Ohio
FEMA Risk Rating
Relatively Low
National Percentile
77th
of 3,144 counties
State Rank
#17
of 88 (1 = highest risk)
Flood Risk
84th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Moderate
Higher than 84% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Very Low
Higher than 25% of US counties
Tornado
Tornado and severe thunderstorm risk
Moderate
Higher than 82% of US counties
Earthquake
Seismic activity and ground shaking risk
Relatively Low
Higher than 79% of US counties
Hurricane
Tropical cyclone and hurricane risk
Very Low
Higher than 40% of US counties
Risk Overview
About Natural Disaster Risk in Clark County, Ohio
Clark County faces moderate disaster risk
Clark County's composite risk score of 77.10 exceeds the national average, placing it in the "Relatively Low" but still elevated risk category. This reflects meaningful exposure to multiple natural hazards that warrant attention from residents and planners.
Above-average risk for Ohio
Clark County scores 77.10, significantly above Ohio's state average of 55.03, ranking it among the state's higher-risk counties. This elevated position reflects particular vulnerability to tornado and flood events.
Riskier than most surrounding areas
Clark County's score of 77.10 exceeds Clinton County (34.00) and Coshocton County (49.08), placing it among the riskier counties in its region. Only Clermont County (77.86) and Columbiana County (69.05) approach similar risk levels.
Tornadoes and floods are primary threats
Clark County faces tornado risk of 82.32 and flood risk of 84.16—both substantially elevated compared to state averages. Earthquake risk (78.78) is also concerning, though wildfire risk remains manageable at 25.03.
Add flood and storm protection now
Clark County residents should secure comprehensive homeowner's insurance that specifically covers tornado, hail, and flood damage. A designated safe room and updated emergency contact plan can save lives during severe weather events.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Clark County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Clark County
Risk Verdict
At the 77th percentile nationally, Clark County experiences a manageable level of natural hazard risk that falls below the U.S. median. High composite risk signals that multiple hazard types are elevated simultaneously; planning for more than one scenario is important in Clark County.
Hazard Breakdown
Flood risk is Clark County's dominant natural hazard, ranked at the 84th percentile nationally under FEMA's National Risk Index. Tornado ranks second at the 82th percentile nationally. Additional tracked hazards include earthquake (79th percentile), hurricane (40th percentile), wildfire (25th percentile).
Preparedness Context
Clark County's dominant hazard is flooding, ranked at the 84th percentile nationally. In addition to flood insurance, residents should identify their nearest evacuation shelter and store key documents in waterproof containers. Secondary tornado exposure at the 82th percentile adds a second preparedness layer; households should review coverage options and alert sign-up for both hazard types. Clark County's county emergency management office publishes hazard-specific guidance tailored to local conditions; bookmarking that resource and the county's alert system is a practical first step for any household.
Regional Context
Clark County falls 22.1 points above Ohio's typical county risk level, which means the hazard environment here is notably more demanding than the state baseline.
Is your household prepared for Clark County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Clark County, OH?
What types of natural hazards affect Clark County?
How does Clark County risk compare to the Ohio average?
Is Clark County at risk for flooding?
How is natural disaster risk measured?
Why is Clark 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.