Mercer County Disaster Risk
Mercer County, West Virginia
FEMA Risk Rating
Relatively Low
National Percentile
65th
of 3,144 counties
State Rank
#18
of 55 (1 = highest risk)
Flood Risk
78th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Relatively Low
Higher than 78% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Relatively Low
Higher than 63% of US counties
Tornado
Tornado and severe thunderstorm risk
Very Low
Higher than 17% of US counties
Earthquake
Seismic activity and ground shaking risk
Relatively Low
Higher than 71% of US counties
Hurricane
Tropical cyclone and hurricane risk
Relatively Low
Higher than 50% of US counties
Risk Overview
About Natural Disaster Risk in Mercer County, West Virginia
Mercer County significantly exceeds national average risk
Mercer County's composite risk score of 65.24 is 33% above West Virginia's state average of 49.21 and substantially above the national baseline. The county ranks in the upper tier nationally for overall disaster exposure, driven by multiple concurrent hazards.
Fifth-highest risk county in West Virginia
Mercer County ranks among West Virginia's most hazard-exposed counties, with its 65.24 score placing it in the top five statewide. Only McDowell, Mingo, Monongalia, and one other county carry comparably high or higher overall risk profiles.
Higher risk than Marshall, lower than McDowell
Mercer County's score of 65.24 exceeds Mason County (57.44) and Marshall County (56.81) to the north, but falls below McDowell County (76.65) to the south. The county occupies the mid-to-upper range among its regional peers.
Flood, earthquake, and wildfire are primary hazards
Mercer County's flood risk of 78.34 is the highest single hazard, followed by earthquake risk at 70.99—the second-highest in the state. Wildfire risk of 62.85 further elevates the county's overall exposure profile, while tornado and hurricane risks remain moderate.
Flood and earthquake insurance both recommended
Flood insurance is essential given the 78.34 flood risk score, particularly in floodplain areas. Earthquake insurance should be strongly considered as well, given the county's exceptionally high seismic score of 70.99—among the state's highest.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Mercer County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Mercer County
Risk Verdict
With a national percentile rank of 65th, Mercer County faces below-average hazard exposure relative to U.S. counties as a whole. Above-average risk does not mean imminent danger; it signals that informed, hazard-specific preparedness has high value here.
Hazard Breakdown
Flood risk is Mercer County's dominant natural hazard, ranked at the 78th percentile nationally under FEMA's National Risk Index. Earthquake ranks second at the 71th percentile nationally. Additional tracked hazards include wildfire (63th percentile), hurricane (50th percentile), tornado (17th percentile).
Preparedness Context
With flood risk ranking at the 78th percentile nationally, Mercer County residents face one of the most financially damaging hazards without specialized coverage. Flood insurance through the NFIP or a private carrier is worth evaluating regardless of current mortgage requirements. The county's second-ranked hazard, earthquake at the 71th percentile nationally, means Mercer County residents face compounding risks from multiple natural hazard types during peak seasons. Registering for Mercer County's county emergency alert system — typically through the county emergency management office's website — ensures households receive early warning when flood events develop faster than forecast.
Regional Context
At 16.0 points above the West Virginia state average, Mercer County carries meaningfully higher natural disaster exposure than a typical West Virginia county.
Is your household prepared for Mercer County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Mercer County, WV?
What types of natural hazards affect Mercer County?
How does Mercer County risk compare to the West Virginia average?
Is Mercer County at risk for flooding?
How is natural disaster risk measured?
Why is Mercer 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.