Sebastian, FL
Local storm history & FEMA National Risk Index data
Sebastian is rated Relatively High for overall natural hazard risk — higher risk than most US counties — based on FEMA's National Risk Index for Indian River County, FL. The county's highest-rated hazards are hurricane, lightning, and wildfire.
Storm events near Sebastian
NOAA-recorded tornado, hail, and flood events within 25 miles of Sebastian's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Sebastian itself, not the whole county.
County-wide hazard risk
Every other hazard FEMA and NOAA track — including drought — is only scored at the county level. These are Indian River County's FEMA National Risk Index scores, covering Sebastian along with the rest of the county, not a Sebastian-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 88.2 | Relatively Low |
| Inland Flooding | 85.9 | Relatively Moderate |
| Coastal Flooding | 69 | Relatively Moderate |
| Earthquake | 32.3 | Very Low |
| Heat Wave | 63.1 | Relatively Low |
| Tornado | 72.5 | Relatively Moderate |
| Avalanche | — | Not Applicable |
| Cold Wave | 39 | Relatively Low |
| Drought | 63 | Relatively Low |
| Hail | 13.1 | Very Low |
| Hurricane | 99.2 | Very High |
| Ice Storm | — | Not Applicable |
| Landslide | 13.9 | Very Low |
| Lightning | 94.4 | Relatively High |
| Strong Wind | 86.3 | Relatively High |
| Tsunami | — | Insufficient Data |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 0 | No Rating |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Indian River County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Indian River County:
More on Indian River County:
Frequently asked questions
What natural hazards is Sebastian, FL at risk of?
Sebastian is rated Relatively High for overall natural hazard risk by FEMA's National Risk Index — higher risk than most US counties. The highest-rated hazards for Indian River County, where Sebastian is located, are hurricane, lightning, and wildfire.
What is Sebastian's biggest natural hazard risk?
Hurricane is the highest-rated hazard for Indian River County, where Sebastian is located, scoring 99.2 out of 100 on FEMA's National Risk Index (rated "Very High").
Is Sebastian a high-risk area for natural disasters?
Yes — Sebastian carries higher risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively High" for Indian River County.
Has Sebastian had tornadoes, hail, or flooding?
NOAA has recorded 28 tornado, 40 hail, 19 inland flooding events within 25 miles of Sebastian since 2016.