Maine

Storm History: Knox County, Maine

340 episodes, 396 events since 1969

Every storm the National Weather Service has filed in Knox County, Maine: 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
396
Deaths
1
Injuries
3
Damage
$27 million
Episodes
340

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 Knox 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 Snow10000
Strong Wind3710$16,000
Hail3400$135,000
Flood3300$3.3 million
Winter Storm3200
Flash Flood2302$17 million
High Wind2100$55,000
Drought2100$1.1 million
Thunderstorm Wind1701$25,000
Cold/Wind Chill1500
Winter Weather1400
Blizzard1400
Extreme Cold/Wind Chill700
Lightning500$431,000
Coastal Flood500$56,000
Ice Storm500$3.7 million
Tornado300$95,000
Tropical Storm300
Storm Surge/Tide200$38,000
Heat200
Debris Flow100$570,000
Hurricane (Typhoon)100
Heavy Rain100

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.

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Knox CountyEvery warning in Knox County since 1986Every county in Maine

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.