South Dakota

Storm History: Sanborn County, South Dakota

548 episodes, 649 events since 1952

Every storm the National Weather Service has filed in Sanborn County, South Dakota: 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
649
Deaths
2
Injuries
4
Damage
$48 million
Episodes
548

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 Sanborn 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
Hail12300$5.1 million
Flood9120$19 million
Tornado7404$930,000
Winter Weather4900
Blizzard4600$126,000
High Wind4600$71,000
Drought4600$22 million
Winter Storm4200
Thunderstorm Wind3400$40,000
Excessive Heat2100
Heavy Snow1900$5,000
Extreme Cold/Wind Chill1700
Cold/Wind Chill1400
Flash Flood1400$28,000
Ice Storm500$1.0 million
Heat400
Wildfire200
Strong Wind200

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 Sanborn County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Sanborn CountyEvery warning in Sanborn County since 1986Every county in South Dakota

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.