Walker County
Alabama — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 83th
Walker County faces medium composite natural disaster risk (NRI Risk Index score 82.6, 83th national percentile), driven primarily by tornado and riverine flood exposure. Expected annual loss across all 18 hazard types is $35M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Tornado | High | 0.91 / yr | $7M |
| Riverine Flood | Medium | 1.11 / yr | $19M |
| Heat Wave | Medium | 8.74 / yr | $1M |
| Landslide | Low | 1.85 / yr | $19K |
| Strong Wind | Medium | 3.77 / yr | $1M |
| Earthquake | Low | 0.00 / yr | $2M |
| Lightning | High | 67.77 / yr | $608K |
| Cold Wave | Medium | 0.84 / yr | $3M |
| Winter Weather | Medium | 3.11 / yr | $80K |
| Wildfire | Very Low | 0.00 / yr | $71K |
| Hurricane | Very Low | 0.04 / yr | $119K |
| Ice Storm | Low | 0.46 / yr | $57K |
| Drought | Low | 26.88 / yr | $45K |
| Hail | Low | 4.39 / yr | $120K |
| 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 |
Frequently Asked Questions
What is the overall natural disaster risk for Walker County?
Walker County has a composite FEMA National Risk Index score of 82.6 out of 100, placing it in the Medium category and the 83th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Walker County?
The three highest-rated hazards are Tornado (High, $7M EAL), Riverine Flood (Medium, $19M EAL), Heat Wave (Medium, $1M EAL). These account for most of the county's expected annual losses.
How does Walker County compare to other Alabama counties?
Walker County ranks #17 of 67 Alabama counties for overall natural disaster risk, with a medium 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. Walker County's $35M EAL is a statistical average, not a guarantee for any specific year or address.