St. Lucie County
Florida — Natural Disaster Risk Assessment
HighComposite Risk Score
National percentile: 96th
St. Lucie County faces high composite natural disaster risk (NRI Risk Index score 96.1, 96th national percentile), driven primarily by hurricane and lightning exposure. Expected annual loss across all 18 hazard types is $193M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Hurricane | Very High | 0.33 / yr | $148M |
| Lightning | Very High | 84.09 / yr | $3M |
| Strong Wind | High | 0.59 / yr | $2M |
| Riverine Flood | Medium | 0.46 / yr | $33M |
| Wildfire | Low | 0.00 / yr | $764K |
| Tornado | Medium | 0.35 / yr | $4M |
| Heat Wave | Medium | 2.38 / yr | $1M |
| Coastal Flood | Medium | 1.11 / yr | $703K |
| Drought | Medium | 20.07 / yr | $353K |
| Earthquake | Very Low | 0.00 / yr | $135K |
| Hail | Very Low | 0.90 / yr | $103K |
| Cold Wave | Low | 2.48 / yr | $321K |
| Landslide | Very Low | 0.06 / yr | $51 |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Ice Storm | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
| Winter Weather | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for St. Lucie County?
St. Lucie County has a composite FEMA National Risk Index score of 96.1 out of 100, placing it in the High category and the 96th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in St. Lucie County?
The three highest-rated hazards are Hurricane (Very High, $148M EAL), Lightning (Very High, $3M EAL), Strong Wind (High, $2M EAL). These account for most of the county's expected annual losses.
How does St. Lucie County compare to other Florida counties?
St. Lucie County ranks #15 of 67 Florida 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. St. Lucie County's $193M EAL is a statistical average, not a guarantee for any specific year or address.