New York

Storm History: Jefferson County, New York

493 episodes, 699 events since 1958

Every storm the National Weather Service has filed in Jefferson County, New York: 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
699
Deaths
3
Injuries
3
Damage
$151 million
Episodes
493

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 Jefferson 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
Thunderstorm Wind16100$1.2 million
Hail10300$16 million
Lake-Effect Snow9200$3.3 million
Winter Storm5800$740,000
Heavy Snow5800$3.9 million
High Wind5010$104 million
Flash Flood4001$377,000
Tornado2701$2.7 million
Flood2610$6.5 million
Frost/Freeze2100$40,000
Extreme Cold/Wind Chill1700
Lakeshore Flood1500$158,000
Blizzard1010$89,000
Ice Storm800$11 million
Coastal Flood700
Drought200
Wildfire100
Strong Wind100$10,000
Lightning101
Cold/Wind Chill100

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 Jefferson County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Jefferson CountyEvery warning in Jefferson County since 1986Every county in New York

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.