Bexar County
Texas — Natural Disaster Risk Assessment
HighComposite Risk Score
National percentile: 99th
Bexar County faces high composite natural disaster risk (NRI Risk Index score 99.4, 99th national percentile), driven primarily by hail and tornado exposure. Expected annual loss across all 18 hazard types is $619M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Hail | Very High | 2.96 / yr | $72M |
| Tornado | Very High | 0.43 / yr | $124M |
| Riverine Flood | Very High | 7.46 / yr | $365M |
| Heat Wave | High | 10.32 / yr | $39M |
| Lightning | High | 45.98 / yr | $2M |
| Cold Wave | High | 0.53 / yr | $10M |
| Wildfire | Medium | 0.00 / yr | $2M |
| Winter Weather | High | 2.84 / yr | $311K |
| Strong Wind | High | 1.00 / yr | $2M |
| Landslide | Low | 0.20 / yr | $26K |
| Hurricane | Medium | 0.04 / yr | $3M |
| Ice Storm | Medium | 0.19 / yr | $324K |
| Drought | Medium | 81.46 / yr | $435K |
| Earthquake | Low | 0.00 / yr | $437K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Bexar County?
Bexar County has a composite FEMA National Risk Index score of 99.4 out of 100, placing it in the High category and the 99th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Bexar County?
The three highest-rated hazards are Hail (Very High, $72M EAL), Tornado (Very High, $124M EAL), Riverine Flood (Very High, $365M EAL). These account for most of the county's expected annual losses.
How does Bexar County compare to other Texas counties?
Bexar County ranks #3 of 254 Texas counties for overall natural disaster risk, with a high rating.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Bexar County's $619M EAL is a statistical average, not a guarantee for any specific year or address.