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

Brazos County Disaster Risk

Brazos County, Texas

FEMA Risk Rating

Relatively Moderate

National Percentile

88th

of 3,144 counties

State Rank

#26

of 254 (1 = highest risk)

Flood Risk

83th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Moderate

Higher than 83% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Relatively Low

Higher than 58% of US counties

Tornado

Tornado and severe thunderstorm risk

Relatively High

Higher than 97% of US counties

Earthquake

Seismic activity and ground shaking risk

Very Low

Higher than 42% of US counties

Hurricane

Tropical cyclone and hurricane risk

Moderate

Higher than 86% of US counties

Risk Overview

About Natural Disaster Risk in Brazos County, Texas

Brazos risk approaches twice the national average

Brazos County's composite risk score of 88.36 ranks Relatively Moderate and approaches double the national average. This Central Texas county faces significantly above-average natural disaster exposure for the United States.

Well above Texas state average risk

Brazos's 88.36 score exceeds the Texas state average of 49.00 by 80%, placing it among the state's higher-risk counties. The county's proximity to multiple hazard zones explains this elevated exposure.

Slightly safer than coastal Brazoria

Brazos (88.36) ranks just below the riskier Brazoria County (93.64) but well above inland peers like Bosque (36.90). Its inland location reduces hurricane threat compared to coastal neighbors but intensifies tornado and flood risk.

Tornadoes and floods dominate exposure

Tornado risk of 96.66 ranks Brazos among Texas's most tornado-prone counties, while flood risk of 82.79 reflects vulnerability to heavy precipitation and stream overflow. Hurricane risk of 85.65, though lower than coastal counties, remains a substantial secondary concern.

Flood and windstorm coverage is critical

Brazos County residents need flood insurance and comprehensive windstorm/hail coverage beyond standard homeowners policies. Safe rooms, weather monitoring systems, and evacuation plans are essential given the extreme tornado and flood threats this county faces.

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

Preparedness Guide

What to Prepare for in Brazos County

Top Hazards by Exposure

  1. #1
    TornadoPrepare
    97th percentile
  2. #2
    HurricanePrepare
    86th percentile
  3. #3
    FloodPrepare
    83th percentile

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

Risk Advisory: Brazos County

Risk Verdict

Brazos County faces a moderate natural disaster risk profile, ranking at the 88th percentile nationally under FEMA's composite risk model. This risk level calls for more than general awareness: insurance coverage review, a family communication plan, and a prepared go-bag are practical priorities.

Hazard Breakdown

Tornado risk is Brazos County's dominant natural hazard, ranked at the 97th percentile nationally under FEMA's National Risk Index. Hurricane ranks second at the 86th percentile nationally. Additional tracked hazards include flood (83th percentile), wildfire (58th percentile), earthquake (42th percentile).

Preparedness Context

Tornado risk is Brazos County's top-ranked natural hazard at the 97th percentile nationally. For Brazos County households, the most protective action available is identifying a reinforced interior room on the lowest floor — a bathroom, closet, or central hallway away from windows. Hurricane is the second hazard driver for Brazos County at the 86th percentile nationally, meaning households should maintain awareness of both severe-weather and hurricane-specific warning systems. A battery-powered NOAA All Hazards weather radio with an auto-alert tone is the highest-leverage single item for tornado preparedness in Brazos County, since it delivers warnings even when power is out and phone networks are congested.

Regional Context

Brazos County's composite risk score sits 39.4 points above the Texas county average, placing it among the more hazard-exposed counties in the state.

Is your household prepared for Brazos 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 Brazos County, TX?
Brazos County has a FEMA National Risk Index rating of Relatively Moderate, placing it in the 88th 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 Brazos County?
Brazos County is evaluated for five major natural hazard types: tornado (97th percentile), hurricane (86th percentile), flooding (83th percentile), wildfire (58th percentile), earthquake (42th percentile). The highest-risk hazard is tornado at the 97th 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 Brazos County risk compare to the Texas average?
Brazos County's composite risk percentile is 88th, compared to the Texas state average of 49th percentile. The state's overall risk rating is Relatively Low. This means Brazos County faces higher natural disaster risk than the typical county in Texas.
Is Brazos County at risk for tornado?
Yes, Brazos County's tornado risk is at the 97th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Brazos County is at the 83th 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 Brazos County higher risk than average?
Brazos County's composite risk score of 88th percentile is above the Texas state average of 49th percentile. This elevated risk is driven by tornado exposure (97th percentile), along with hurricane 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.