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

Brown County Disaster Risk

Brown County, Texas

FEMA Risk Rating

Relatively Low

National Percentile

65th

of 3,144 counties

State Rank

#91

of 254 (1 = highest risk)

Flood Risk

73th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 73% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Moderate

Higher than 86% of US counties

Tornado

Tornado and severe thunderstorm risk

Relatively Low

Higher than 70% of US counties

Earthquake

Seismic activity and ground shaking risk

Very Low

Higher than 17% of US counties

Hurricane

Tropical cyclone and hurricane risk

Relatively Low

Higher than 45% of US counties

Risk Overview

About Natural Disaster Risk in Brown County, Texas

Brown County faces moderate U.S. risk

Brown County's composite risk score of 64.89 places it above the national average, driven primarily by significant wildfire and flood exposure. The county rates as Relatively Low overall, but ranks higher than many peers in wildfire vulnerability at 86.16.

Higher risk than most Texas counties

At 64.89, Brown County's composite risk score exceeds Texas's state average of 49.00 by 32 percent. This positions the county in the upper-middle tier of Texas natural disaster risk.

Wildfire sets Brown apart locally

Brown County's wildfire risk of 86.16 substantially outpaces neighboring Callahan County's 82.00, reflecting its geography and vegetation patterns. However, Brown's flood risk of 72.96 closely mirrors regional trends across Central Texas counties.

Wildfire and flood dominate here

Wildfires pose the most acute threat in Brown County, with a risk score of 86.16 that puts grassland and structures in direct danger during dry seasons. Flooding comes second at 72.96, particularly along creek systems during spring and summer storms.

Prepare for fire and water damage

Brown County residents should prioritize comprehensive homeowners insurance that covers both wildfire and flood damage, since standard policies exclude both. Consider clearing vegetation 30 feet from structures and ensuring your property is defensible against advancing flames.

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

Preparedness Guide

What to Prepare for in Brown County

Top Hazards by Exposure

  1. #1
    WildfirePrepare
    86th percentile
  2. #2
    FloodPrepare
    73th percentile
  3. #3
    TornadoPrepare
    70th percentile

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

Risk Advisory: Brown County

Risk Verdict

With a national percentile rank of 65th, Brown County faces below-average hazard exposure relative to U.S. counties as a whole. Above-average risk does not mean imminent danger; it signals that informed, hazard-specific preparedness has high value here.

Hazard Breakdown

Wildfire risk is Brown County's dominant natural hazard, ranked at the 86th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 73th percentile nationally. Additional tracked hazards include tornado (70th percentile), hurricane (45th percentile), earthquake (17th percentile).

Preparedness Context

At the 86th percentile nationally for wildfire risk, Brown County households benefit from creating defensible space — a buffer of reduced vegetation around structures — and reviewing whether homeowners insurance covers wildfire damage in this region. The county's flood exposure at the 73th percentile nationally complements the wildfire risk — saturating rain after burn scarring often triggers secondary flood and debris flow events. Enrolling in the county's wireless emergency alert system and keeping a vehicle at least half-full during peak fire season are low-cost habits that dramatically reduce evacuation lag time for Brown County residents.

Regional Context

At 15.9 points above the Texas state average, Brown County carries meaningfully higher natural disaster exposure than a typical Texas county.

Is your household prepared for Brown 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 Brown County, TX?
Brown County has a FEMA National Risk Index rating of Relatively Low, placing it in the 65th 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 Brown County?
Brown County is evaluated for five major natural hazard types: wildfire (86th percentile), flooding (73th percentile), tornado (70th percentile), hurricane (45th percentile), earthquake (17th percentile). The highest-risk hazard is wildfire 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 Brown County risk compare to the Texas average?
Brown County's composite risk percentile is 65th, compared to the Texas state average of 49th percentile. The state's overall risk rating is Relatively Low. This means Brown County faces higher natural disaster risk than the typical county in Texas.
Is Brown County at risk for wildfire?
Yes, Brown County's wildfire risk is at the 86th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Brown County is at the 73th 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 Brown County higher risk than average?
Brown County's composite risk score of 65th percentile is above the Texas state average of 49th percentile. This elevated risk is driven by wildfire exposure (86th percentile), along with flooding and tornado 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.