Strong Wind Risk in New Hampshire
All New Hampshire counties ranked by FEMA National Risk Index strong wind score
Strong Wind risk — damaging straight-line winds outside of tornadoes and hurricanes — is rated for 10 of 10 New Hampshire counties in FEMA's National Risk Index. Hillsborough County carries the state's highest strong wind score at 86.9, with $3M in expected annual strong wind losses.
1 New Hampshire county is rated High or Very High for strong wind, and expected annual losses from strong wind total roughly $8M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Strong Wind
| # | County | Strong Wind Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Hillsborough County | High | 1.05 / yr | $3M | |
| 2 | Rockingham County | Medium | 0.84 / yr | $2M | |
| 3 | Merrimack County | Medium | 0.91 / yr | $748K | |
| 4 | Grafton County | Low | 0.79 / yr | $577K | |
| 5 | Strafford County | Low | 0.72 / yr | $549K | |
| 6 | Belknap County | Low | 0.80 / yr | $466K | |
| 7 | Cheshire County | Low | 1.21 / yr | $370K | |
| 8 | Sullivan County | Low | 1.03 / yr | $295K | |
| 9 | Coos County | Low | 0.39 / yr | $182K | |
| 10 | Carroll County | Low | 0.59 / yr | $219K |
10 New Hampshire counties with measurable strong wind risk. See the national strong wind ranking or all New Hampshire counties by overall risk.
Frequently Asked Questions
Which New Hampshire county has the highest strong wind risk?
Hillsborough County has the highest FEMA strong wind risk score in New Hampshire at 86.9 (High), with $3M in expected annual losses and about 1.05 events per year.
How many New Hampshire counties face significant strong wind risk?
10 New Hampshire counties record measurable strong wind risk in FEMA's National Risk Index; 1 of them are rated High or Very High.