Missouri

Storm History: St. Clair County, Missouri

405 episodes, 531 events since 1955

Every storm the National Weather Service has filed in St. Clair County, Missouri: 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
531
Deaths
2
Injuries
4
Damage
$59 million
Episodes
405

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 St. Clair 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
Hail13800$180,000
Tornado12603$27 million
Flash Flood9420$479,000
Thunderstorm Wind5400$335,000
Drought3100$22 million
Winter Storm2901$1.2 million
Ice Storm1300$305,000
Flood1000$35,000
Heat900
Winter Weather600
Heavy Snow400$10,000
High Wind400
Extreme Cold/Wind Chill400
Frost/Freeze300$7.7 million
Lightning200$18,000
Wildfire200$20,000
Blizzard100
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 St. Clair County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in St. Clair CountyEvery warning in St. Clair County since 1986Every county in Missouri

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.