Cobb County
Georgia — Natural Disaster Risk Assessment
HighComposite Risk Score
National percentile: 94th
Cobb County faces high composite natural disaster risk (NRI Risk Index score 94.4, 94th national percentile), driven primarily by tornado and hail exposure. Expected annual loss across all 18 hazard types is $210M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Tornado | High | 0.21 / yr | $36M |
| Hail | High | 5.63 / yr | $6M |
| Lightning | Very High | 62.25 / yr | $3M |
| Cold Wave | High | 1.11 / yr | $20M |
| Riverine Flood | High | 1.29 / yr | $125M |
| Ice Storm | High | 1.16 / yr | $2M |
| Earthquake | Medium | 0.00 / yr | $10M |
| Heat Wave | Medium | 2.16 / yr | $4M |
| Strong Wind | Medium | 2.78 / yr | $2M |
| Landslide | Low | 0.30 / yr | $14K |
| Winter Weather | Medium | 2.79 / yr | $224K |
| Hurricane | Low | 0.04 / yr | $660K |
| Wildfire | Very Low | 0.00 / yr | $68K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Drought | Very Low | 34.84 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Cobb County?
Cobb County has a composite FEMA National Risk Index score of 94.4 out of 100, placing it in the High category and the 94th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Cobb County?
The three highest-rated hazards are Tornado (High, $36M EAL), Hail (High, $6M EAL), Lightning (Very High, $3M EAL). These account for most of the county's expected annual losses.
How does Cobb County compare to other Georgia counties?
Cobb County ranks #4 of 159 Georgia 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. Cobb County's $210M EAL is a statistical average, not a guarantee for any specific year or address.