Illinois

Storm History: Clay County, Illinois

291 episodes, 447 events since 1957

Every storm the National Weather Service has filed in Clay County, Illinois: 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
447
Deaths
3
Injuries
21
Damage
$58 million
Episodes
291

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 Clay 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
Tornado117016$14 million
Flash Flood9100$9.3 million
Hail9000$553,000
Thunderstorm Wind7304$1.1 million
Winter Storm1301
Heavy Snow1100
High Wind800$22,000
Drought800$32 million
Heat700
Flood700
Excessive Heat710
Ice Storm300
Extreme Cold/Wind Chill300
Cold/Wind Chill200
Sleet200
Winter Weather220
Frost/Freeze100
Dense Fog100
Blizzard100$800,000

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 Clay County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Clay CountyEvery warning in Clay County since 1986Every county in Illinois

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.