Iowa

Storm History: Adams County, Iowa

287 episodes, 424 events since 1956

Every storm the National Weather Service has filed in Adams 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
424
Deaths
1
Injuries
6
Damage
$179 million
Episodes
287

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 Adams 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
Tornado13016$35 million
Hail6400$1.7 million
Flash Flood5900$2.1 million
Drought2700$110 million
High Wind2500$961,000
Winter Storm1900$500,000
Blizzard1600$425,000
Heavy Snow1600$3.4 million
Thunderstorm Wind1400$196,000
Ice Storm1200$340,000
Flood1000$21 million
Frost/Freeze800$4.0 million
Cold/Wind Chill700$294,000
Extreme Cold/Wind Chill700
Heavy Rain500
Excessive Heat300$135,000
Heat100
Winter Weather100

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 Adams County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Adams CountyEvery warning in Adams 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.