Ice Storm Risk in New Hampshire
All New Hampshire counties ranked by FEMA National Risk Index ice storm score
Ice Storm risk — freezing rain that coats surfaces in heavy, damaging ice — is rated for 10 of 10 New Hampshire counties in FEMA's National Risk Index. Hillsborough County carries the state's highest ice storm score at 95.4, with $3M in expected annual ice storm losses.
6 New Hampshire counties are rated High or Very High for ice storm, and expected annual losses from ice storm total roughly $9M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Ice Storm
| # | County | Ice Storm Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Hillsborough County | Very High | 2.14 / yr | $3M | |
| 2 | Rockingham County | High | 2.03 / yr | $2M | |
| 3 | Merrimack County | High | 1.84 / yr | $1M | |
| 4 | Strafford County | High | 2.29 / yr | $951K | |
| 5 | Carroll County | High | 1.29 / yr | $712K | |
| 6 | Belknap County | High | 1.84 / yr | $668K | |
| 7 | Cheshire County | Medium | 1.80 / yr | $438K | |
| 8 | Grafton County | Medium | 0.60 / yr | $332K | |
| 9 | Coos County | Medium | 0.25 / yr | $180K | |
| 10 | Sullivan County | Medium | 0.87 / yr | $233K |
10 New Hampshire counties with measurable ice storm risk. See the national ice storm ranking or all New Hampshire counties by overall risk.
Frequently Asked Questions
Which New Hampshire county has the highest ice storm risk?
Hillsborough County has the highest FEMA ice storm risk score in New Hampshire at 95.4 (Very High), with $3M in expected annual losses and about 2.14 events per year.
How many New Hampshire counties face significant ice storm risk?
10 New Hampshire counties record measurable ice storm risk in FEMA's National Risk Index; 6 of them are rated High or Very High.