Collin County
Texas — Natural Disaster Risk Assessment
HighComposite Risk Score
National percentile: 99th
Collin County faces high composite natural disaster risk (NRI Risk Index score 98.9, 99th national percentile), driven primarily by hail and tornado exposure. Expected annual loss across all 18 hazard types is $716M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Hail | Very High | 8.79 / yr | $97M |
| Tornado | Very High | 0.86 / yr | $420M |
| Heat Wave | High | 18.37 / yr | $18M |
| Riverine Flood | High | 2.11 / yr | $153M |
| Cold Wave | High | 1.05 / yr | $19M |
| Ice Storm | High | 1.23 / yr | $2M |
| Winter Weather | High | 4.58 / yr | $625K |
| Strong Wind | High | 4.40 / yr | $3M |
| Earthquake | Low | 0.00 / yr | $3M |
| Wildfire | Low | 0.00 / yr | $635K |
| Lightning | Medium | 56.19 / yr | $650K |
| Hurricane | Low | 0.01 / yr | $292K |
| Landslide | Very Low | 0.12 / yr | $2K |
| Drought | Low | 29.76 / yr | $47K |
| 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 Collin County?
Collin County has a composite FEMA National Risk Index score of 98.9 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 Collin County?
The three highest-rated hazards are Hail (Very High, $97M EAL), Tornado (Very High, $420M EAL), Heat Wave (High, $18M EAL). These account for most of the county's expected annual losses.
How does Collin County compare to other Texas counties?
Collin County ranks #6 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. Collin County's $716M EAL is a statistical average, not a guarantee for any specific year or address.