Addison County
Vermont — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 27th
Addison County faces very low composite natural disaster risk (NRI Risk Index score 26.8, 27th national percentile), driven primarily by landslide and hurricane exposure. Expected annual loss across all 18 hazard types is $11M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Landslide | Low | 0.85 / yr | $9K |
| Hurricane | Low | 0.04 / yr | $595K |
| Avalanche | Very Low | 0.01 / yr | $2K |
| Earthquake | Very Low | 0.00 / yr | $474K |
| Winter Weather | Low | 17.73 / yr | $95K |
| Lightning | Low | 22.95 / yr | $345K |
| Ice Storm | Low | 0.32 / yr | $122K |
| Riverine Flood | Low | 2.21 / yr | $8M |
| Heat Wave | Low | 2.19 / yr | $381K |
| Cold Wave | Low | 3.24 / yr | $717K |
| Strong Wind | Low | 0.94 / yr | $391K |
| Wildfire | Very Low | 0.00 / yr | $11K |
| Tornado | Very Low | 0.05 / yr | $304K |
| Hail | Very Low | 1.38 / yr | $63K |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Drought | 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 Addison County?
Addison County has a composite FEMA National Risk Index score of 26.8 out of 100, placing it in the Very Low category and the 27th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Addison County?
The three highest-rated hazards are Landslide (Low, $9K EAL), Hurricane (Low, $595K EAL), Avalanche (Very Low, $2K EAL). These account for most of the county's expected annual losses.
How does Addison County compare to other Vermont counties?
Addison County ranks #10 of 14 Vermont 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. Addison County's $11M EAL is a statistical average, not a guarantee for any specific year or address.