Iowa

Storm History: Mills County, Iowa

394 episodes, 516 events since 1950

Every storm the National Weather Service has filed in Mills 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
516
Deaths
1
Injuries
8
Damage
$14 million
Episodes
394

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 Mills 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
Hail14505$165,000
Tornado10903$3.2 million
Thunderstorm Wind6400$18,000
Winter Storm3800
Cold/Wind Chill2300
High Wind2100
Flood2100$9.1 million
Blizzard1600
Heat1500
Excessive Heat1500
Flash Flood1200$117,000
Extreme Cold/Wind Chill1000
Drought1000
Heavy Snow700$1.1 million
Winter Weather410
Ice Storm300
Funnel Cloud200
Lightning100$250,000

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 Mills County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Mills CountyEvery warning in Mills 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.