Okaloosa County, Florida Natural Disaster Risk
FEMA National Risk Index assessment · FL
MediumComposite Risk Score
National percentile: 92th
Okaloosa County faces medium composite natural disaster risk (NRI Risk Index score 92.5, 92th national percentile), driven primarily by lightning and hurricane exposure. Expected annual loss across all 18 hazard types is $134M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Risk Overview
FEMA's National Risk Index rates Okaloosa County at medium composite risk, with a National Risk Index score of 92.5 out of 100 — placing it in the 92nd national percentile and near the national midpoint for natural-disaster risk. The score blends Expected Annual Loss, Social Vulnerability, and Community Resilience across all 18 FEMA hazard types.
Most of Okaloosa County's expected losses come from lightning (electrical discharges from storms that ignite fires and cause casualties) at Very High risk — $5M in expected annual loss and about 84.46 events per year; hurricane (tropical cyclones bringing extreme wind, rain, and storm surge) at Very High risk — $87M in expected annual loss and about 0.24 events per year; and tornado (violently rotating columns of air capable of catastrophic local damage) at High risk — $12M in expected annual loss and about 0.89 events per year. Across all hazards, FEMA estimates $134M in expected annual loss for a population of 211K.
Beyond physical exposure, Okaloosa County has a low social vulnerability rating (how susceptible the population is to harm) and a medium community resilience rating (its capacity to prepare for and recover from disasters). Both measures sit toward the lower end, indicating relatively modest population sensitivity.
The federal record bears this out: Okaloosa County has received 41 federal disaster declarations since 1970, including 24 for hurricane events and 6 for severe storm events. The most recent was Hurricane Helene (hurricane), declared in September 2024.
Among 67 Florida counties, Okaloosa County ranks #25 for overall natural disaster risk.
Top Hazards
All 18 Hazard Risks
| Lightning | Very High | 84.46 / yr | $5M |
| Hurricane | Very High | 0.24 / yr | $87M |
| Tornado | High | 0.89 / yr | $12M |
| Heat Wave | Medium | 8.05 / yr | $3M |
| Riverine Flood | Medium | 1.68 / yr | $22M |
| Wildfire | Low | 0.00 / yr | $307K |
| Strong Wind | Medium | 1.85 / yr | $1M |
| Cold Wave | Medium | 0.69 / yr | $3M |
| Coastal Flood | Medium | 1.95 / yr | $730K |
| Earthquake | Low | 0.00 / yr | $569K |
| Winter Weather | Low | 0.52 / yr | $64K |
| Landslide | Very Low | 0.15 / yr | $1K |
| Ice Storm | Low | 0.08 / yr | $49K |
| Hail | Very Low | 1.03 / yr | $123K |
| Drought | Very Low | 14.72 / yr | $5K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Disaster History
Okaloosa County has received 41 federal disaster declarations since 1970, most recently Hurricane Helene in September 2024. Most frequent causes: Hurricane (24), Severe Storm (6), Flood (5).
| Declared | Type | Disaster |
|---|---|---|
| September 2024 | Hurricane | Hurricane Helene |
| September 2024 | Tropical Storm | Tropical Storm Helene |
| August 2024 | Tropical Storm | Hurricane Debby |
| August 2024 | Tropical Storm | Tropical Storm Debby |
| September 2022 | Hurricane | Hurricane Ian |
| September 2022 | Hurricane | Tropical Storm Ian |
| August 2021 | Hurricane | Tropical Storm Fred |
| September 2020 | Hurricane | Hurricane Sally |
| September 2020 | Hurricane | Hurricane Sally |
| March 2020 | Biological | Covid-19 Pandemic |
Showing the 10 most recent of 41 declarations.
Source: FEMA Disaster Declarations Summaries (OpenFEMA).
Frequently Asked Questions
What is the overall natural disaster risk for Okaloosa County?
Okaloosa County has a composite FEMA National Risk Index score of 92.5 out of 100, placing it in the Medium category and the 92th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Okaloosa County?
The three highest-rated hazards are Lightning (Very High, $5M EAL), Hurricane (Very High, $87M EAL), Tornado (High, $12M EAL). These account for most of the county's expected annual losses.
How does Okaloosa County compare to other Florida counties?
Okaloosa County ranks #25 of 67 Florida counties for overall natural disaster risk, with a medium rating.
How many federally declared disasters has Okaloosa County had?
FEMA records 41 federal disaster declarations for Okaloosa County since 1970, most often 24 for hurricane events and 6 for severe storm events. The most recent was Hurricane Helene, declared in September 2024.
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. Okaloosa County's $134M EAL is a statistical average, not a guarantee for any specific year or address.