New Hampshire

Storm History: Sullivan County, New Hampshire

422 episodes, 555 events since 1955

Every storm the National Weather Service has filed in Sullivan County, New Hampshire: floods, hail, damaging wind, tornadoes, winter storms, heat and the rest, with the most serious on record. Events filed by forecast zone count for every county the zone covers.

The record

Events
555
Deaths
4
Injuries
4
Damage
$16 million
Episodes
422

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

Open the live radar over Sullivan County

Every year

From 1996 the record holds 48 kinds of event with each office’s narrative; before that, tornadoes, hail and thunderstorm wind only, and before 1955 tornadoes alone.

By kind of event

Counted under the kind that heads each episode.

Kind of eventEventsDeathsInjuriesDamage
Heavy Snow11700
Hail11513$132,000
Thunderstorm Wind7000$20,000
Flash Flood4100$5.9 million
Winter Storm3600
Tornado2900$189,000
Flood2820$5.4 million
Strong Wind2710$17,000
Winter Weather2000
Drought1900$600,000
High Wind1500$31,000
Cold/Wind Chill1400
Extreme Cold/Wind Chill700
Blizzard400
Ice Storm301$3.1 million
Heat200
Lightning200$14,000
Tropical Storm200
Heavy Rain100
Coastal Flood100
Debris Flow100$153,000
Frost/Freeze100

The deadliest

The costliest

Damage within this county, in the dollars of its year.

The largest hail

The largest stone in each episode, which may have fallen in a neighboring county of the same episode.

The strongest tornadoes

Every tornado in Sullivan County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Sullivan CountyEvery warning in Sullivan County since 1986Every county in New Hampshire

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.