Illinois

Storm History: Warren County, Illinois

365 episodes, 487 events since 1958

Every storm the National Weather Service has filed in Warren 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
487
Deaths
1
Injuries
1
Damage
$31 million
Episodes
365

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 Warren 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
Tornado11511$2.7 million
Hail7900$3.7 million
Thunderstorm Wind6500$178,000
Winter Storm6200
Flash Flood4100$1.0 million
Winter Weather2600$2,000
Drought1700$21 million
Heavy Snow1300
Ice Storm1300$16,000
Flood900$100,000
Dense Fog900
High Wind700$120,000
Extreme Cold/Wind Chill700
Frost/Freeze600$2.4 million
Blizzard600
Cold/Wind Chill500
Heat400
Strong Wind100
Excessive Heat100
Funnel Cloud100

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 Warren County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Warren CountyEvery warning in Warren 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.