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

Marion County Disaster Risk

Marion County, Tennessee

FEMA Risk Rating

Relatively Low

National Percentile

58th

of 3,144 counties

State Rank

#45

of 95 (1 = highest risk)

Flood Risk

61th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 61% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Relatively Low

Higher than 60% 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 70% of US counties

Hurricane

Tropical cyclone and hurricane risk

Very Low

Higher than 38% of US counties

Risk Overview

About Natural Disaster Risk in Marion County, Tennessee

Marion County carries moderate risk

Marion County scores 58.24 on the composite risk index with a Relatively Low rating, slightly above Tennessee's average of 52.45. The county's risk is balanced across flood, wildfire, and tornado exposures.

Mid-range risk statewide

Marion County ranks near the median among Tennessee's counties for natural disaster risk. Its composite score places it just above average relative to state peers, with no single hazard dominating.

Similar to Lincoln County profile

Marion County's 58.24 score closely mirrors Lincoln County (58.91) to the east, creating a consistent mid-range risk zone in south-central Tennessee. Both counties face meaningful tornado and flood threats.

Tornadoes and wildfires are notable

Tornadoes at 81.84 are Marion County's primary concern, followed by wildfire risk at 59.67—an unusually high wildfire ranking for Tennessee. Flood exposure at 61.39 rounds out your three main hazard categories.

Prioritize flood and wildfire coverage

Flood insurance is important given Marion County's 61.39 flood risk; separate policies are required since standard homeowners insurance excludes water damage. If you live near woodland or forested areas, confirm wildfire coverage (59.67) is included in your policy.

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

Preparedness Guide

What to Prepare for in Marion County

Top Hazards by Exposure

  1. #1
    TornadoPrepare
    82th percentile
  2. #2
    EarthquakePrepare
    70th percentile
  3. #3
    FloodPrepare
    61th percentile

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

Risk Advisory: Marion County

Risk Verdict

At the 58th percentile nationally, Marion County experiences a manageable level of natural hazard risk that falls below the U.S. median. Marion County's risk profile calls for targeted preparedness, focusing on the hazard categories that dominate the county's score.

Hazard Breakdown

Tornado risk is Marion County's dominant natural hazard, ranked at the 82th percentile nationally under FEMA's National Risk Index. Earthquake ranks second at the 70th percentile nationally. Additional tracked hazards include flood (61th percentile), wildfire (60th percentile), hurricane (38th percentile).

Preparedness Context

Marion County's primary hazard, tornado, ranks at the 82th percentile nationally. In Marion County, mobile homes and manufactured housing face significantly higher tornado risk than site-built structures; residents in these homes should identify the nearest permanent community shelter in advance. The secondary earthquake hazard at the 70th percentile nationally adds seasonal complexity to Marion County's preparedness calendar, since earthquake and tornado risk often peak at different points in the year. The highest-risk window for tornado fatalities is overnight, when Marion County residents may be asleep. A NOAA weather radio with overnight alert capability is the single most impactful low-cost preparedness step available to Marion County households.

Regional Context

Marion County falls 5.8 points above Tennessee's typical county risk level, which means the hazard environment here is notably more demanding than the state baseline.

Is your household prepared for Marion 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 Marion County, TN?
Marion County has a FEMA National Risk Index rating of Relatively Low, placing it in the 58th 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 Marion County?
Marion County is evaluated for five major natural hazard types: tornado (82th percentile), earthquake (70th percentile), flooding (61th percentile), wildfire (60th percentile), hurricane (38th percentile). The highest-risk hazard is tornado at the 82th 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 Marion County risk compare to the Tennessee average?
Marion County's composite risk percentile is 58th, compared to the Tennessee state average of 53th percentile. The state's overall risk rating is Relatively Low. This means Marion County faces higher natural disaster risk than the typical county in Tennessee.
Is Marion County at risk for tornado?
Yes, Marion County's tornado risk is at the 82th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Marion County is at the 61th 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 Marion County higher risk than average?
Marion County's composite risk score of 58th percentile is above the Tennessee state average of 53th percentile. This elevated risk is driven by tornado exposure (82th percentile), along with earthquake and flooding and wildfire 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.