Minnesota

Storm History: Rock County, Minnesota

566 episodes, 701 events since 1956

Every storm the National Weather Service has filed in Rock County, Minnesota: 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
701
Deaths
5
Injuries
10
Damage
$37 million
Episodes
566

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 Rock 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
Hail14900$905,000
Winter Weather8020
Thunderstorm Wind6800$2.3 million
Tornado6407$675,000
Blizzard5011$647,000
Winter Storm5000$10 million
Flood4800$11 million
Drought3700$6.0 million
Flash Flood3500$3.0 million
High Wind3000$46,000
Extreme Cold/Wind Chill2300
Heavy Snow1912$38,000
Excessive Heat1600$25,000
Cold/Wind Chill1200
Heat800
Ice Storm500$1.5 million
Strong Wind510
Lightning100$10,000
Wildfire100

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 Rock County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Rock CountyEvery warning in Rock County since 1986Every county in Minnesota

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.