Thomas County, Georgia Natural Disaster Risk
FEMA National Risk Index assessment · GA
LowComposite Risk Score
National percentile: 66th
Thomas County faces low composite natural disaster risk (NRI Risk Index score 66.0, 66th national percentile), driven primarily by hurricane and lightning exposure. Expected annual loss across all 18 hazard types is $20M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Risk Overview
Thomas County carries a low composite natural disaster risk, with a National Risk Index score of 66.0 out of 100 — placing it in the 66th national percentile and below the national average for natural-disaster risk. The score blends Expected Annual Loss, Social Vulnerability, and Community Resilience across all 18 FEMA hazard types.
Most of Thomas County's expected losses come from hurricane (tropical cyclones bringing extreme wind, rain, and storm surge) at Medium risk — $9M in expected annual loss and about 0.25 events per year; lightning (electrical discharges from storms that ignite fires and cause casualties) at Medium risk — $522K in expected annual loss and about 74.33 events per year; and cold wave (prolonged spells of dangerously low temperatures) at Medium risk — $2M in expected annual loss and about 1.63 events per year. Across all hazards, FEMA estimates $20M in expected annual loss for a population of 46K.
Beyond physical exposure, Thomas County has a high social vulnerability rating (how susceptible the population is to harm) and a high community resilience rating (its capacity to prepare for and recover from disasters). Higher vulnerability is partly offset by strong community resilience and recovery capacity.
The federal record bears this out: Thomas County has received 20 federal disaster declarations since 1977, including 8 for hurricane events and 3 for tropical storm events. The most recent was Hurricane Helene (hurricane), declared in September 2024.
Among 159 Georgia counties, Thomas County ranks #34 for overall natural disaster risk.
Top Hazards
All 18 Hazard Risks
| Hurricane | Medium | 0.25 / yr | $9M |
| Lightning | Medium | 74.33 / yr | $522K |
| Cold Wave | Medium | 1.63 / yr | $2M |
| Wildfire | Low | 0.00 / yr | $151K |
| Heat Wave | Low | 5.05 / yr | $482K |
| Riverine Flood | Low | 0.61 / yr | $7M |
| Drought | Low | 25.92 / yr | $152K |
| Tornado | Low | 0.32 / yr | $1M |
| Earthquake | Very Low | 0.00 / yr | $201K |
| Strong Wind | Low | 1.60 / yr | $263K |
| Hail | Very Low | 1.27 / yr | $107K |
| Winter Weather | Low | 0.32 / yr | $22K |
| Landslide | Very Low | 0.07 / yr | $46 |
| Ice Storm | Very Low | 0.01 / yr | $3K |
| 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 |
Disaster History
Thomas County has received 20 federal disaster declarations since 1977, most recently Hurricane Helene in September 2024. Most frequent causes: Hurricane (8), Tropical Storm (3), Severe Storm (3).
| Declared | Type | Disaster |
|---|---|---|
| September 2024 | Hurricane | Hurricane Helene |
| September 2024 | Tropical Storm | Hurricane Helene |
| September 2024 | Tropical Storm | Tropical Storm Debby |
| August 2024 | Tropical Storm | Hurricane Debby |
| September 2023 | Hurricane | Hurricane Idalia |
| March 2020 | Biological | Covid-19 Pandemic |
| March 2020 | Biological | Covid-19 |
| October 2018 | Hurricane | Hurricane Michael |
| October 2018 | Hurricane | Hurricane Michael |
| September 2017 | Hurricane | Hurricane Irma |
Showing the 10 most recent of 20 declarations.
Source: FEMA Disaster Declarations Summaries (OpenFEMA).
Frequently Asked Questions
What is the overall natural disaster risk for Thomas County?
Thomas County has a composite FEMA National Risk Index score of 66.0 out of 100, placing it in the Low category and the 66th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Thomas County?
The three highest-rated hazards are Hurricane (Medium, $9M EAL), Lightning (Medium, $522K EAL), Cold Wave (Medium, $2M EAL). These account for most of the county's expected annual losses.
How does Thomas County compare to other Georgia counties?
Thomas County ranks #34 of 159 Georgia counties for overall natural disaster risk, with a low rating.
How many federally declared disasters has Thomas County had?
FEMA records 20 federal disaster declarations for Thomas County since 1977, most often 8 for hurricane events and 3 for tropical 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. Thomas County's $20M EAL is a statistical average, not a guarantee for any specific year or address.