Carroll County
New Hampshire — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 71th
Carroll County faces low composite natural disaster risk (NRI Risk Index score 71.0, 71th national percentile), driven primarily by winter weather and ice storm 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
| Winter Weather | High | 22.24 / yr | $423K |
| Ice Storm | High | 1.29 / yr | $712K |
| Hurricane | Medium | 0.08 / yr | $5M |
| Riverine Flood | Medium | 2.64 / yr | $23M |
| Landslide | Low | 1.33 / yr | $17K |
| Avalanche | Low | 0.01 / yr | $4K |
| Lightning | Medium | 19.10 / yr | $467K |
| Earthquake | Low | 0.00 / yr | $560K |
| Cold Wave | Low | 2.73 / yr | $800K |
| Heat Wave | Very Low | 1.92 / yr | $179K |
| Wildfire | Very Low | 0.00 / yr | $19K |
| Strong Wind | Low | 0.59 / yr | $219K |
| Tornado | Very Low | 0.11 / yr | $227K |
| Hail | Very Low | 1.65 / yr | $39K |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Drought | Very Low | 0.19 / 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 Carroll County?
Carroll County has a composite FEMA National Risk Index score of 71.0 out of 100, placing it in the Low category and the 71th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Carroll County?
The three highest-rated hazards are Winter Weather (High, $423K EAL), Ice Storm (High, $712K EAL), Hurricane (Medium, $5M EAL). These account for most of the county's expected annual losses.
How does Carroll County compare to other New Hampshire counties?
Carroll County ranks #6 of 10 New Hampshire 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. Carroll County's $31M EAL is a statistical average, not a guarantee for any specific year or address.