Iowa

Storm History: Marion County, Iowa

513 episodes, 919 events since 1957

Every storm the National Weather Service has filed in Marion 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
919
Deaths
0
Injuries
31
Damage
$279 million
Episodes
513

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 Marion 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
Hail25706$1.9 million
Tornado238025$125 million
Flash Flood12100$4.3 million
Flood8800$26 million
Drought3300$110 million
Winter Storm2900$565,000
High Wind2700$882,000
Thunderstorm Wind2600$1.3 million
Heavy Snow2200$3.5 million
Blizzard1700$335,000
Ice Storm1500$323,000
Heavy Rain1000
Frost/Freeze900$4.0 million
Cold/Wind Chill700$294,000
Funnel Cloud700
Extreme Cold/Wind Chill700
Excessive Heat300$135,000
Heat100
Winter Weather100
Lightning100$2,000

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 Marion County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Marion CountyEvery warning in Marion 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.