Iowa

Storm History: Clinton County, Iowa

552 episodes, 833 events since 1956

Every storm the National Weather Service has filed in Clinton County, Iowa: 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
833
Deaths
3
Injuries
30
Damage
$90 million
Episodes
552

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 Clinton 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
Tornado219130$40 million
Hail16000$1.0 million
Thunderstorm Wind7500$2.2 million
Winter Storm7410
Flash Flood7100$1.2 million
Flood6410$8.7 million
Winter Weather4300
High Wind2100$419,000
Heavy Snow1900
Drought1500$36 million
Ice Storm1400$265,000
Blizzard1400
Dense Fog1100
Extreme Cold/Wind Chill1100
Frost/Freeze700$495,000
Cold/Wind Chill600
Heat300
Lightning200$10,000
Strong Wind100
Funnel Cloud100
Excessive Heat100
Freezing Fog100

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 Clinton County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Clinton CountyEvery warning in Clinton County since 1986Every county in Iowa

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.