Grimes County Disaster Risk
Grimes County, Texas
FEMA Risk Rating
Relatively Low
National Percentile
57th
of 3,144 counties
State Rank
#120
of 254 (1 = highest risk)
Flood Risk
35th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Very Low
Higher than 35% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Relatively Low
Higher than 59% of US counties
Tornado
Tornado and severe thunderstorm risk
Relatively Low
Higher than 76% of US counties
Earthquake
Seismic activity and ground shaking risk
Very Low
Higher than 19% of US counties
Hurricane
Tropical cyclone and hurricane risk
Moderate
Higher than 85% of US counties
Risk Overview
About Natural Disaster Risk in Grimes County, Texas
Grimes County faces moderate hurricane risk
Grimes County's composite risk score of 56.97 ranks as relatively low, slightly above the Texas state average of 49.00. The county's hurricane risk of 84.94 is notably elevated for its inland location, reflecting Gulf Coast storm exposure.
Inland but hurricane-vulnerable
Grimes County ranks well below Texas's highest-risk counties but faces above-average hurricane exposure (84.94) and moderate tornado risk (75.99). Its location between Houston and the Gulf Coast leaves the county vulnerable to tropical storms and their inland moisture and rainfall.
Lower risk than coastal neighbors
Grimes County's score of 56.97 is substantially lower than neighboring Gonzales County (85.66) and Guadalupe County (91.51), both closer to the coast. However, its hurricane score exceeds many inland Texas counties, reflecting its proximity to Gulf systems.
Hurricanes and tornadoes are dual threats
Grimes County faces elevated hurricane risk (84.94) from Atlantic and Gulf tropical systems, along with moderate tornado risk (75.99) from spring severe weather. Wildfire risk (59.38) represents a secondary but growing threat in the county.
Secure flood and wind coverage
Grimes County residents should maintain separate flood insurance, as standard homeowners policies exclude flood damage—critical given the county's 84.94 hurricane risk. Ensure your policy includes comprehensive wind and hail coverage, and trim trees around your home to reduce storm damage risk.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Grimes County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Grimes County
Risk Verdict
Grimes County's FEMA risk score places it at the 57th percentile nationally, indicating lower-than-typical exposure for a U.S. county. A moderate composite score often means one or two hazard categories are doing the heavy lifting — knowing which ones matters for preparation.
Hazard Breakdown
Hurricane risk is Grimes County's dominant natural hazard, ranked at the 85th percentile nationally under FEMA's National Risk Index. Tornado ranks second at the 76th percentile nationally. Additional tracked hazards include wildfire (59th percentile), flood (35th percentile), earthquake (19th percentile).
Preparedness Context
With hurricane ranked at the 85th percentile nationally, Grimes County sits in a zone where multi-day supply readiness matters: grid outages after landfalling storms can last one to three weeks in heavily affected areas. Tornado at the 76th percentile nationally is Grimes County's secondary hazard, often intensified by the same weather systems that produce hurricane conditions. Insurance gaps are the most common post-hurricane financial shock: standard homeowners policies typically exclude flood damage and may have a separate wind deductible. Grimes County households benefit from a pre-season insurance review confirming both wind and flood coverage.
Regional Context
The Texas county average is 8.0 composite points below Grimes County's score, a gap that reflects the county's elevated position in the state's hazard distribution.
Is your household prepared for Grimes County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Grimes County, TX?
What types of natural hazards affect Grimes County?
How does Grimes County risk compare to the Texas average?
Is Grimes County at risk for hurricane?
How is natural disaster risk measured?
Why is Grimes County higher risk than average?
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.