Iowa

Storm History: Marshall County, Iowa

500 episodes, 748 events since 1951

Every storm the National Weather Service has filed in Marshall 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
748
Deaths
0
Injuries
50
Damage
$635 million
Episodes
500

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 Marshall 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
Tornado217050$236 million
Hail16300$1.8 million
Flash Flood7900$3.5 million
Flood6000$276 million
High Wind3800$1.1 million
Thunderstorm Wind3600$435,000
Drought3000$106 million
Winter Storm2600$1.3 million
Blizzard2100$375,000
Heavy Snow1700$3.4 million
Ice Storm1300$323,000
Extreme Cold/Wind Chill1100
Frost/Freeze900$4.0 million
Cold/Wind Chill800$294,000
Funnel Cloud800
Lightning300$364,000
Excessive Heat300$135,000
Heavy Rain300
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 Marshall County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Marshall CountyEvery warning in Marshall 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.