Iowa

Storm History: Iowa County, Iowa

441 episodes, 600 events since 1953

Every storm the National Weather Service has filed in Iowa 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
600
Deaths
1
Injuries
23
Damage
$59 million
Episodes
441

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 Iowa 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
Tornado13709$31 million
Hail12903$2.7 million
Winter Storm6800
Flash Flood6001$622,000
Winter Weather4010$5,000
Flood3700$4.3 million
Heavy Snow2001$10,000
Thunderstorm Wind1609$824,000
Ice Storm1600$906,000
Drought1600$19 million
Blizzard1400
Extreme Cold/Wind Chill1000
High Wind900$121,000
Dense Fog800
Frost/Freeze600$83,000
Cold/Wind Chill500
Heat400
Lightning200$65,000
Strong Wind100
Heavy Rain100
Excessive Heat100

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 Iowa County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Iowa CountyEvery warning in Iowa 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.