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

Hamblen County Disaster Risk

Hamblen County, Tennessee

FEMA Risk Rating

Relatively Low

National Percentile

47th

of 3,144 counties

State Rank

#58

of 95 (1 = highest risk)

Flood Risk

55th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 55% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Very Low

Higher than 40% of US counties

Tornado

Tornado and severe thunderstorm risk

Relatively Low

Higher than 61% of US counties

Earthquake

Seismic activity and ground shaking risk

Moderate

Higher than 86% of US counties

Hurricane

Tropical cyclone and hurricane risk

Very Low

Higher than 40% of US counties

Risk Overview

About Natural Disaster Risk in Hamblen County, Tennessee

Hamblen County's risk near national average

Hamblen County's composite risk score of 47.11 places it in the Relatively Low category, near the national average for many counties. The county faces moderate exposure to earthquakes, floods, and tornadoes that warrant thoughtful preparedness planning.

Below Tennessee's average risk profile

Hamblen County's 47.11 score sits below Tennessee's state average of 52.45, positioning it as a safer-than-average county within the state. Its earthquake risk (85.94) ranks high, but flood and tornado risks remain moderate, creating a balanced overall hazard profile.

Safer than Greene, comparable to Cocke

Hamblen County's 47.11 score falls below Greene County (56.30) to the north and provides moderate protection relative to other East Tennessee counties. Its risk level reflects a typical Northeast Tennessee community facing seismic and water-related hazards alongside seasonal tornado exposure.

Earthquakes dominate hazard landscape

Earthquake risk peaks at 85.94, making seismic activity Hamblen County's most significant natural hazard concern tied to the Eastern Tennessee Seismic Zone. Flood risk (54.61) ranks second, reflecting the county's terrain and susceptibility to heavy rainfall and stream overflow during wet seasons.

Earthquake and flood coverage essential

Homeowners should prioritize adding earthquake coverage to their policies and verify flood insurance is in place, especially for properties near waterways. Given Hamblen County's moderate composite risk and high earthquake vulnerability, comprehensive coverage addressing seismic and water-related hazards provides critical protection.

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

Preparedness Guide

What to Prepare for in Hamblen County

Top Hazards by Exposure

  1. #1
    EarthquakePrepare
    86th percentile
  2. #2
    TornadoPrepare
    61th percentile
  3. #3
    FloodPrepare
    55th percentile

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

Risk Advisory: Hamblen County

Risk Verdict

Hamblen County ranks at the 47th percentile nationally for natural disaster risk — below the median for U.S. counties. Residents of Hamblen County can use the 47th percentile ranking as a baseline, while recognizing that individual properties may still lie in specific hazard zones that differ from the county average.

Hazard Breakdown

Earthquake risk is Hamblen County's dominant natural hazard, ranked at the 86th percentile nationally under FEMA's National Risk Index. Tornado ranks second at the 61th percentile nationally. Additional tracked hazards include flood (55th percentile), wildfire (40th percentile), hurricane (40th percentile).

Preparedness Context

Hamblen County ranks at the 86th percentile nationally for earthquake risk. Unlike most natural hazards, earthquakes provide no advance warning; preparedness here means structural adjustments and a practiced response, not alert monitoring. Tornado at the 61th percentile nationally is a separate hazard dimension for Hamblen County that requires different protective strategies from earthquake preparedness. For earthquake preparedness, Hamblen County's county emergency management office often maintains a list of community water supply points, Red Cross shelter locations, and post-quake assistance programs — useful resources to identify before an event occurs.

Regional Context

A composite score 5.3 points below the Tennessee state average puts Hamblen County in a better-than-typical position relative to neighboring counties.

Is your household prepared for Hamblen 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 Hamblen County, TN?
Hamblen County has a FEMA National Risk Index rating of Relatively Low, placing it in the 47th 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 Hamblen County?
Hamblen County is evaluated for five major natural hazard types: earthquake (86th percentile), tornado (61th percentile), flooding (55th percentile), wildfire (40th percentile), hurricane (40th percentile). The highest-risk hazard is earthquake at the 86th 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 Hamblen County risk compare to the Tennessee average?
Hamblen County's composite risk percentile is 47th, compared to the Tennessee state average of 53th percentile. The state's overall risk rating is Relatively Low. This means Hamblen County faces lower natural disaster risk than the typical county in Tennessee.
Is Hamblen County at risk for earthquake?
Yes, Hamblen County's earthquake risk is at the 86th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Hamblen County is at the 55th 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.
Is Hamblen County a safe place to live?
Hamblen County's composite risk score of 47th percentile is below the Tennessee state average of 53th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is earthquake at the 86th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.
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.