riskbycounty
FEMA NRI 1.19.0Updated Nov 2023 · Coverage 2014–2023Methodology

Chatham County Disaster Risk

Chatham County, North Carolina

FEMA Risk Rating

Relatively Low

National Percentile

67th

of 3,144 counties

State Rank

#57

of 100 (1 = highest risk)

Flood Risk

74th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 74% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Very Low

Higher than 33% of US counties

Tornado

Tornado and severe thunderstorm risk

Relatively Low

Higher than 76% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 61% of US counties

Hurricane

Tropical cyclone and hurricane risk

Moderate

Higher than 83% of US counties

Risk Overview

About Natural Disaster Risk in Chatham County, North Carolina

Chatham's risk slightly above national average

Chatham County's composite risk score of 67.18 places it in the "Relatively Low" category, marginally above the national average. The county experiences moderate natural hazard exposure across multiple threat types.

Close to North Carolina's typical risk level

Chatham's score of 67.18 sits just above the state average of 66.72, placing it near the middle of North Carolina's risk distribution. The county mirrors statewide vulnerability patterns closely.

Risk profile mirrors regional peers

Chatham's 67.18 score places it between nearby Caswell County (22.36) and Catawba County (80.57), reflecting middle-ground risk in its region. The county's exposure is more balanced than some surrounding areas.

Hurricanes and tornadoes create seasonal patterns

Chatham faces hurricane risk of 83.35 and tornado risk of 75.80, both above state averages and driven by Atlantic weather systems. Flood risk at 74.40 rounds out the county's primary hazard triad.

Invest in comprehensive multi-hazard coverage

With three major hazards all scoring above 74, Chatham homeowners should maintain robust coverage for wind, water, and flood damage. Ensure your policy covers both summer tornado season and fall hurricane season exposures.

Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor

Preparedness Guide

What to Prepare for in Chatham County

Top Hazards by Exposure

  1. #1
    HurricanePrepare
    83th percentile
  2. #2
    TornadoPrepare
    76th percentile
  3. #3
    FloodPrepare
    74th percentile

Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)

Risk Advisory: Chatham County

Risk Verdict

Chatham County has a below-average natural disaster risk profile, scoring at the 67th percentile nationally under FEMA's National Risk Index. Households in Chatham County benefit from knowing which individual hazard types — flood, wildfire, tornado, or hurricane — are the primary contributors.

Hazard Breakdown

Hurricane risk is Chatham County's dominant natural hazard, ranked at the 83th percentile nationally under FEMA's National Risk Index. Tornado ranks second at the 76th percentile nationally. Additional tracked hazards include flood (74th percentile), earthquake (61th percentile), wildfire (33th percentile).

Preparedness Context

Hurricane risk is Chatham County's top-ranked natural hazard at the 83th percentile nationally. The most time-sensitive preparedness step is knowing the county's evacuation zone for your address — zone maps are published by the county emergency management office. Tornado at the 76th percentile nationally is Chatham County's secondary hazard, often intensified by the same weather systems that produce hurricane conditions. Chatham County's county emergency management office publishes official evacuation zone maps with zone-specific shelter locations; downloading this map and identifying your zone assignment is the single highest-value pre-season step.

Regional Context

At just 0.5 composite points from the North Carolina average, Chatham County's natural disaster risk is closely in line with its in-state peers.

Is your household prepared for Chatham County's hazards?

Review FEMA's county-specific preparedness checklists and emergency planning guides.

FEMA Ready Guide →

Frequently Asked Questions

What is the natural disaster risk in Chatham County, NC?
Chatham County has a FEMA National Risk Index rating of Relatively Low, placing it in the 67th 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.
What types of natural hazards affect Chatham County?
Chatham County is evaluated for five major natural hazard types: hurricane (83th percentile), tornado (76th percentile), flooding (74th percentile), earthquake (61th percentile), wildfire (33th percentile). The highest-risk hazard is hurricane at the 83th 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.
How does Chatham County risk compare to the North Carolina average?
Chatham County's composite risk percentile is 67th, compared to the North Carolina state average of 67th percentile. The state's overall risk rating is Relatively Low. This means Chatham County faces higher natural disaster risk than the typical county in North Carolina.
Is Chatham County at risk for hurricane?
Yes, Chatham County's hurricane risk is at the 83th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Chatham County is at the 74th percentile.
How is natural disaster risk measured?
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.
Why is Chatham County higher risk than average?
Chatham County's composite risk score of 67th percentile is above the North Carolina state average of 67th percentile. This elevated risk is driven by hurricane exposure (83th percentile), along with tornado and flooding and earthquake risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.
By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

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.