Aleutians East Borough
Alaska — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 21th
Aleutians East Borough faces very low composite natural disaster risk (NRI Risk Index score 21.3, 21th national percentile), driven primarily by volcanic activity and landslide exposure. Expected annual loss across all 18 hazard types is $4M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Volcanic Activity | High | 0.08 / yr | $895K |
| Landslide | Medium | 28.20 / yr | $230K |
| Earthquake | Low | 0.16 / yr | $598K |
| Tsunami | Low | 0.35 / yr | $2M |
| Avalanche | Very Low | 0.07 / yr | $1K |
| Winter Weather | Very Low | 6.13 / yr | $11K |
| Ice Storm | Very Low | 0.01 / yr | $693 |
| Tornado | Very Low | 0.01 / yr | $50 |
| Lightning | Very Low | 0.43 / yr | $379 |
| Wildfire | Very Low | 0.00 / yr | $6 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Cold Wave | 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 | 0.04 / yr | $0 |
| Strong Wind | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Aleutians East Borough?
Aleutians East Borough has a composite FEMA National Risk Index score of 21.3 out of 100, placing it in the Very Low category and the 21th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Aleutians East Borough?
The three highest-rated hazards are Volcanic Activity (High, $895K EAL), Landslide (Medium, $230K EAL), Earthquake (Low, $598K EAL). These account for most of the county's expected annual losses.
How does Aleutians East Borough compare to other Alaska counties?
Aleutians East Borough ranks #17 of 30 Alaska counties for overall natural disaster risk, with a very 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 East Borough's $4M EAL is a statistical average, not a guarantee for any specific year or address.