Accomack County
Virginia — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 81th
Accomack County faces medium composite natural disaster risk (NRI Risk Index score 81.0, 81th national percentile), driven primarily by coastal flood and hurricane exposure. Expected annual loss across all 18 hazard types is $31M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Coastal Flood | Very High | 3.69 / yr | $11M |
| Hurricane | High | 0.25 / yr | $13M |
| Wildfire | Low | 0.00 / yr | $276K |
| Drought | Low | 1.98 / yr | $195K |
| Cold Wave | Low | 0.84 / yr | $845K |
| Heat Wave | Low | 5.00 / yr | $296K |
| Earthquake | Very Low | 0.00 / yr | $208K |
| Riverine Flood | Low | 0.50 / yr | $5M |
| Ice Storm | Low | 0.27 / yr | $58K |
| Strong Wind | Low | 0.65 / yr | $211K |
| Winter Weather | Low | 5.05 / yr | $18K |
| Hail | Very Low | 0.78 / yr | $57K |
| Lightning | Very Low | 33.98 / yr | $53K |
| Tornado | Very Low | 0.37 / yr | $142K |
| Landslide | Very Low | 0.05 / yr | $46 |
| Avalanche | 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 Accomack County?
Accomack County has a composite FEMA National Risk Index score of 81.0 out of 100, placing it in the Medium category and the 81th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Accomack County?
The three highest-rated hazards are Coastal Flood (Very High, $11M EAL), Hurricane (High, $13M EAL), Wildfire (Low, $276K EAL). These account for most of the county's expected annual losses.
How does Accomack County compare to other Virginia counties?
Accomack County ranks #6 of 133 Virginia 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. Accomack County's $31M EAL is a statistical average, not a guarantee for any specific year or address.