Aleutians West Census Area
Alaska — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 67th
Aleutians West Census Area faces low composite natural disaster risk (NRI Risk Index score 67.3, 67th national percentile), driven primarily by volcanic activity and earthquake exposure. Expected annual loss across all 18 hazard types is $29M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Volcanic Activity | High | 0.16 / yr | $3M |
| Earthquake | Low | 0.43 / yr | $6M |
| Tsunami | Medium | 0.35 / yr | $20M |
| Landslide | Medium | 0.25 / yr | $47K |
| Avalanche | Medium | 0.03 / yr | $457K |
| Winter Weather | Very Low | 2.97 / yr | $17K |
| Ice Storm | Very Low | 0.01 / yr | $2K |
| Cold Wave | Very Low | 0.01 / yr | $395 |
| Tornado | Very Low | 0.00 / yr | $1 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Drought | Very Low | 0.00 / yr | $0 |
| Hail | Very Low | 0.00 / yr | $0 |
| Heat Wave | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Riverine Flood | Very Low | 0.00 / yr | $0 |
| Lightning | Very Low | 1.24 / yr | $24 |
| Strong Wind | Very Low | 0.00 / yr | $0 |
| Wildfire | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Aleutians West Census Area?
Aleutians West Census Area has a composite FEMA National Risk Index score of 67.3 out of 100, placing it in the Low category and the 67th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Aleutians West Census Area?
The three highest-rated hazards are Volcanic Activity (High, $3M EAL), Earthquake (Low, $6M EAL), Tsunami (Medium, $20M EAL). These account for most of the county's expected annual losses.
How does Aleutians West Census Area compare to other Alaska counties?
Aleutians West Census Area ranks #5 of 30 Alaska counties for overall natural disaster risk, with a low 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. Aleutians West Census Area's $29M EAL is a statistical average, not a guarantee for any specific year or address.