Iowa

Storm History: Carroll County, Iowa

442 episodes, 691 events since 1957

Every storm the National Weather Service has filed in Carroll 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
691
Deaths
0
Injuries
89
Damage
$173 million
Episodes
442

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 Carroll 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
Tornado18401$8.0 million
Hail138088$1.3 million
Flash Flood6900$1.6 million
Thunderstorm Wind5000$23 million
Flood4300$22 million
High Wind4100$1.1 million
Drought3700$106 million
Blizzard2600$495,000
Heavy Snow2200$96,000
Winter Storm2200$590,000
Ice Storm1100$4.1 million
Extreme Cold/Wind Chill1000
Frost/Freeze900$4.0 million
Heavy Rain900
Cold/Wind Chill700$294,000
Funnel Cloud400
Lightning300$355,000
Excessive Heat300$135,000
Winter Weather200
Heat100

The deadliest

None recorded.

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 Carroll County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Carroll CountyEvery warning in Carroll 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.