Hurricane Risk in New Hampshire
All New Hampshire counties ranked by FEMA National Risk Index hurricane score
Hurricane risk — tropical cyclones bringing extreme wind, rain, and storm surge — is rated for 10 of 10 New Hampshire counties in FEMA's National Risk Index. Hillsborough County carries the state's highest hurricane score at 92.6, with $18M in expected annual hurricane losses.
No New Hampshire county reaches the High band for hurricane, and expected annual losses from hurricane total roughly $41M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Hurricane
| # | County | Hurricane Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Hillsborough County | Medium | 0.11 / yr | $18M | |
| 2 | Carroll County | Medium | 0.08 / yr | $5M | |
| 3 | Merrimack County | Medium | 0.09 / yr | $4M | |
| 4 | Rockingham County | Medium | 0.14 / yr | $5M | |
| 5 | Grafton County | Low | 0.06 / yr | $2M | |
| 6 | Belknap County | Low | 0.09 / yr | $2M | |
| 7 | Coos County | Low | 0.05 / yr | $1M | |
| 8 | Strafford County | Low | 0.13 / yr | $1M | |
| 9 | Cheshire County | Low | 0.08 / yr | $1M | |
| 10 | Sullivan County | Low | 0.06 / yr | $561K |
10 New Hampshire counties with measurable hurricane risk. See the national hurricane ranking or all New Hampshire counties by overall risk.
Frequently Asked Questions
Which New Hampshire county has the highest hurricane risk?
Hillsborough County has the highest FEMA hurricane risk score in New Hampshire at 92.6 (Medium), with $18M in expected annual losses and about 0.11 events per year.
How many New Hampshire counties face significant hurricane risk?
10 New Hampshire counties record measurable hurricane risk in FEMA's National Risk Index; 0 of them are rated High or Very High.