Ohio

Storm History: Union County, Ohio

345 episodes, 433 events since 1963

Every storm the National Weather Service has filed in Union County, Ohio: 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
433
Deaths
2
Injuries
13
Damage
$12 million
Episodes
345

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 Union 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
Tornado90011$1.8 million
Hail8100$430,000
Flash Flood5700$3.2 million
Winter Weather4900
Winter Storm4600$25,000
Thunderstorm Wind3200$193,000
Flood2800$40,000
Heavy Snow1501$1,000
High Wind1400$5.6 million
Ice Storm800
Heat300
Drought200
Extreme Cold/Wind Chill200
Excessive Heat200
Cold/Wind Chill100$20,000
Dense Fog121$100,000
Frost/Freeze100$540,000
Strong Wind100

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 Union County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Union CountyEvery warning in Union County since 1986Every county in Ohio

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.