2,311
Recorded events
10
Counties affected
11
Direct deaths
$14.5M
Property damage
New Hampshire thunderstorm wind history: 2,311 recorded events across 10 counties between 1955 and 2026.
Decade by decade
New Hampshire thunderstorm wind history by decade
The 2010s are the busiest decade on record with 877 reported thunderstorm wind events across New Hampshire. Earlier decades are thinner because systematic reporting for this hazard expanded over time, not because the weather was calmer.
County ranking
Counties with the most thunderstorm wind events in New Hampshire
| Rank | County | Events | Deaths | Damage | Span |
|---|---|---|---|---|---|
| #1 | Grafton County | 399 | 0 | $24K | 1961–2025 |
| #2 | Cheshire County | 357 | 0 | $1.4M | 1963–2026 |
| #3 | Hillsborough County | 269 | 1 | $1.7M | 1956–2026 |
| #4 | Rockingham County | 258 | 4 | $66K | 1958–2025 |
| #5 | Merrimack County | 233 | 1 | $44K | 1962–2025 |
| #6 | Carroll County | 191 | 0 | $5.5M | 1970–2025 |
| #7 | Coos County | 175 | 2 | $560K | 1955–2026 |
| #8 | Sullivan County | 151 | 1 | $17K | 1960–2025 |
| #9 | Belknap County | 148 | 1 | $168K | 1960–2025 |
| #10 | Strafford County | 127 | 1 | $5.0M | 1971–2025 |
Significant events
Deadliest thunderstorm wind events in New Hampshire
| Date | County | Scale | Deaths | Injuries |
|---|---|---|---|---|
| Aug 18, 1991 | Rockingham County | — | 3 | 11 |
| Aug 3, 2015 | Coos County | — | 2 | 32 |
| Jul 6, 1999 | Hillsborough County | — | 1 | 0 |
| Aug 21, 1994 | Merrimack County | — | 1 | 0 |
| Jun 17, 2000 | Rockingham County | — | 1 | 0 |
| Sep 24, 2006 | Strafford County | — | 1 | 0 |
| Jul 19, 2015 | Sullivan County | — | 1 | 0 |
| Jul 6, 1999 | Belknap County | — | 1 | 0 |
All hazards in New Hampshire · Thunderstorm Wind across the U.S.