Grafton County, New Hampshire: hazard risk
FEMA rates Grafton County's overall risk Relatively Moderate (score 81.8 of 100, higher than 81% of rated U.S. counties); 1 of its 15 hazards are rated Relatively High or Very High, led by winter weather. Its storm record holds 1,373 events since 1950.
FEMA's rating for each hazard
These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.
FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).
| Hazard | Risk rating | Score | Expected annual loss |
|---|---|---|---|
| Winter Weather | Relatively High | 93.3 | $608K |
| Landslide | Relatively Moderate | 97.8 | $544K |
| Riverine Flooding | Relatively Moderate | 90.1 | $43M |
| Lightning | Relatively Moderate | 80.9 | $828K |
| Ice Storm | Relatively Moderate | 75.8 | $332K |
| Hurricane | Relatively Low | 78.5 | $1.7M |
| Avalanche | Relatively Low | 74.1 | $13K |
| Earthquake | Relatively Low | 69.6 | $848K |
| Cold Wave | Relatively Low | 54.1 | $1.2M |
| Strong Wind | Relatively Low | 48.3 | $577K |
| Heat Wave | Relatively Low | 44.3 | $310K |
| Wildfire | Very Low | 30.9 | $16K |
| Tornado | Very Low | 24.4 | $378K |
| Hail | Very Low | 19.2 | $75K |
| Drought | No Rating | 0.0 | $0 |
Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.
What the record holds
| Hazard | Records | Deaths | Damage | Rank in state | Rank in U.S. |
|---|---|---|---|---|---|
| Severe thunderstorm wind | 408 | 0 | $24K | 9th of 10 | 2317th of 3,080 |
| Winter storms | 354 | 3 | $3.1M | 10th of 10 | 1245th of 3,077 |
| Floods | 267 | 2 | $59M | 4th of 10 | 1041st of 3,080 |
| Hail | 132 | 0 | $7K | 9th of 10 | 2540th of 3,080 |
| High wind and dust storms | 90 | 1 | $580K | 9th of 10 | 1432nd of 3,080 |
| Extreme cold | 46 | 0 | – | 8th of 10 | 1514th of 3,076 |
| Drought | 37 | 0 | $1.4M | 9th of 10 | 1963rd of 3,063 |
| Tornadoes | 14 | 0 | $3.2M | 9th of 10 | 2541st of 3,080 |
| Lightning | 10 | 0 | $1.4M | 9th of 10 | 1193rd of 3,080 |
| Hurricanes and tropical storms | 5 | 0 | – | 9th of 10 | 994th of 1,849 |
| Heat | 4 | 0 | – | 8th of 10 | 2303rd of 3,076 |
| Heavy rain | 3 | 0 | $12K | 10th of 10 | 2168th of 3,080 |
| Landslides and avalanches | 2 | 1 | – | 2nd of 10 | 326th of 2,278 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Grafton County record: every hazard by year and month, the deadliest events and FEMA's declarations.