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

McLennan County Disaster Risk

McLennan County, Texas

FEMA Risk Rating

Relatively Moderate

National Percentile

91th

of 3,144 counties

State Rank

#20

of 254 (1 = highest risk)

Flood Risk

89th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Moderate

Higher than 89% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Moderate

Higher than 90% of US counties

Tornado

Tornado and severe thunderstorm risk

Relatively High

Higher than 99% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 64% of US counties

Hurricane

Tropical cyclone and hurricane risk

Moderate

Higher than 81% of US counties

Risk Overview

About Natural Disaster Risk in McLennan County, Texas

McLennan faces well-above-average risk

With a composite risk score of 91.22, McLennan County ranks in the elevated tier compared to the national average of roughly 50. The county's rating of Relatively Moderate reflects genuine exposure to multiple serious hazards that residents should actively monitor and prepare for.

Among Texas's most vulnerable counties

McLennan's score of 91.22 far exceeds Texas's state average of 49.00, placing it in the higher-risk segment of the state's 254 counties. This makes McLennan one of Texas's genuine disaster-risk hotspots, requiring heightened preparedness.

Riskier than surrounding counties

McLennan's composite score of 91.22 stands well above nearby Milam County (58.08) and Mills County (5.60), reflecting its unique vulnerability profile. The county's exposure to multiple hazard types distinguishes it from less-threatened neighbors in Central Texas.

Tornado and wildfire top the list

Tornado risk scores 98.82 in McLennan—exceptionally high—while wildfire risk reaches 90.01, both well above state norms. Residents should maintain a tornado safety plan and keep evacuation routes clear during dry seasons.

Bundle comprehensive disaster coverage

Standard homeowners insurance doesn't cover tornado or flood damage; McLennan residents should add separate windstorm and flood policies immediately. Review coverage annually and confirm your deductibles align with your home's replacement cost.

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

Preparedness Guide

What to Prepare for in McLennan County

Top Hazards by Exposure

  1. #1
    TornadoPrepare
    99th percentile
  2. #2
    WildfirePrepare
    90th percentile
  3. #3
    FloodPrepare
    89th percentile

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

Risk Advisory: McLennan County

Risk Verdict

McLennan County's overall risk score at the 91th percentile nationally signals meaningful exposure to multiple natural hazard types. Comprehensive household preparedness — including reviewing insurance, maintaining emergency supplies, and knowing evacuation routes — is strongly recommended.

Hazard Breakdown

Tornado risk is McLennan County's dominant natural hazard, ranked at the 99th percentile nationally under FEMA's National Risk Index. Wildfire ranks second at the 90th percentile nationally. Additional tracked hazards include flood (89th percentile), hurricane (81th percentile), earthquake (64th percentile).

Preparedness Context

McLennan County ranks at the 99th percentile nationally for tornado exposure. Unlike many slow-onset hazards, tornadoes in McLennan County can reach full intensity in minutes; a pre-practiced household shelter plan matters far more than stockpiled supplies. The secondary wildfire hazard at the 90th percentile nationally adds seasonal complexity to McLennan County's preparedness calendar, since wildfire and tornado risk often peak at different points in the year. McLennan County county emergency management typically publishes annual severe-weather preparedness guides tailored to local tornado patterns; households benefit from reviewing these before storm season begins each spring.

Regional Context

Compared to other Texas counties, McLennan County runs 42.2 composite risk points higher than the state mean — reflecting above-average hazard concentration in this area.

Is your household prepared for McLennan 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 McLennan County, TX?
McLennan County has a FEMA National Risk Index rating of Relatively Moderate, placing it in the 91th 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 McLennan County?
McLennan County is evaluated for five major natural hazard types: tornado (99th percentile), wildfire (90th percentile), flooding (89th percentile), hurricane (81th percentile), earthquake (64th percentile). The highest-risk hazard is tornado at the 99th 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 McLennan County risk compare to the Texas average?
McLennan County's composite risk percentile is 91th, compared to the Texas state average of 49th percentile. The state's overall risk rating is Relatively Low. This means McLennan County faces higher natural disaster risk than the typical county in Texas.
Is McLennan County at risk for tornado?
Yes, McLennan County's tornado risk is at the 99th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, McLennan County is at the 89th 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 McLennan County higher risk than average?
McLennan County's composite risk score of 91th percentile is above the Texas state average of 49th percentile. This elevated risk is driven by tornado exposure (99th percentile), along with wildfire and flooding and hurricane 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.