Natural disaster risk in St. Lucie County, Florida
Florida · population 328,876 · FIPS 12111
Overall: relatively high risk
St. Lucie County has a composite risk score of 96.1 out of 100 — higher than 96% of US counties. It ranks 15 of 67 in Florida (1 = highest risk). Its highest-rated hazards are hurricane, lightning, strong wind.
Drought now: Yes: D1 Moderate Drought, 43 weeks
Yes. On the U.S. Drought Monitor map valid 13 October 2026, 0.03% of St. Lucie County is in D1 Moderate Drought. Some of it has been at D1 or worse for 43 weeks in a row.
Drought in St. Lucie County: the last 52 weeks · droughtmonitor.unl.edu
The U.S. Drought Monitor is jointly produced by the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, the National Oceanic and Atmospheric Administration and the National Aeronautics and Space Administration. Map courtesy of NDMC.
Risk, loss, vulnerability and resilience
| Measure | Rating and score |
|---|---|
| Overall risk Expected annual loss, adjusted for social vulnerability and community resilience. |
Relatively high 96.1 |
| Expected annual loss About $193.4 million a year, on average, across all 18 hazards. |
Relatively high 95.5 |
| Social vulnerability Higher means people may find it harder to prepare and recover. |
Relatively moderate 51.2 |
| Community resilience Higher means a stronger ability to prepare, adapt and recover. |
Relatively moderate 49.6 |
Risk by hazard
FEMA's risk rating for each of 18 natural hazards in St. Lucie County, highest first. "Not applicable" means the hazard is not modelled here.
| Hazard | Risk rating and score |
|---|---|
| Hurricane | Very high 99 |
| Lightning | Very high 98 |
| Strong wind | Relatively high 89 |
| Inland (riverine) flooding | Relatively moderate 89 |
| Tornado | Relatively moderate 82 |
| Heat wave | Relatively moderate 80 |
| Coastal flooding | Relatively moderate 65 |
| Drought | Relatively moderate 64 |
| Wildfire | Relatively low 86 |
| Cold wave | Relatively low 26 |
| Earthquake | Very low 39 |
| Hail | Very low 29 |
| Landslide | Very low 14 |
| Avalanche | Not applicable |
| Ice storm | Not applicable |
| Tsunami | Insufficient data |
| Volcanic activity | Not applicable |
| Winter weather | No rating |
FEMA disaster declarations for St. Lucie County
Federal declarations that designated St. Lucie County, since 1 Jan 2024 (the period this site keeps from OpenFEMA). Older declarations are in FEMA's own dataset.
Yes. St. Lucie County has been named in 2 FEMA declarations since 1 Jan 2024. The latest is DR-4834-FL (Hurricane Milton), declared 11 Oct 2024.
| Declaration | Kind | Incident | Declared | Individual assistance here |
|---|---|---|---|---|
| DR-4834-FL | Major disaster | Hurricane Milton | 11 Oct 2024 | Yes |
| EM-3622-FL | Emergency | Hurricane Milton | 7 Oct 2024 | No |
All FEMA declarations in Florida, with estimated apply-by dates · Open FEMA deadlines
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s). Dataset: Disaster Declarations Summaries - v2.
How to read these ratings
- Ratings run in five steps: very low, relatively low, relatively moderate, relatively high and very high. They compare a county with every other US county; they are not a measure of danger on their own.
- Scores run from 0 to 100 and are national percentiles. The bar shows the score: a score of 80 means a higher value than 80% of US counties.
- Overall risk combines the expected annual loss with social vulnerability and community resilience.
- Expected annual loss is the average yearly loss to buildings, people and agriculture the model expects from all 18 hazards.
- Social vulnerability describes how hard it may be for people to prepare for and recover from a disaster. Higher is worse.
- Community resilience describes a community's ability to prepare, adapt and recover. Higher is better.
- "Not applicable" means FEMA does not model that hazard there (for example, hurricanes far inland).
About this data
Source: FEMA National Risk Index, version 1.20, released December 2025, published by the Federal Emergency Management Agency (US public domain). About the National Risk Index. The index is a model of relative risk built from historical hazard records, what is exposed and community factors. It is not a forecast, it does not describe any single property, and it is not insurance or financial advice. For decisions about a specific address, check FEMA's flood maps and your local emergency management office.
Questions
What is the natural disaster risk in St. Lucie County, Florida?
FEMA's National Risk Index rates the overall risk in St. Lucie County as relatively high, with a score of 96.1 out of 100 (higher than 96% of US counties). That is a comparison with other US counties, not a forecast.
What are the biggest natural hazards in St. Lucie County?
The hazards rated highest for St. Lucie County are hurricane (very high), lightning (very high), strong wind (relatively high).
What is the flood risk in St. Lucie County?
FEMA rates inland (river and rain) flooding risk in St. Lucie County as relatively moderate, and coastal flooding risk as relatively moderate. For a specific property, check the FEMA flood map and your local floodplain office.
Has St. Lucie County had a FEMA disaster declaration?
Yes. St. Lucie County has been named in 2 FEMA declarations since 1 Jan 2024. The latest is DR-4834-FL (Hurricane Milton), declared 11 Oct 2024.
Is St. Lucie County in a drought?
Yes. On the U.S. Drought Monitor map valid 13 October 2026, 0.03% of St. Lucie County is in D1 Moderate Drought. Some of it has been at D1 or worse for 43 weeks in a row.
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