South Dakota

Storm History: Pennington County, South Dakota

1,601 episodes, 3,571 events since 1953

Every storm the National Weather Service has filed in Pennington 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
3,571
Deaths
8
Injuries
52
Damage
$92 million
Episodes
1,601

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 Pennington 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
Hail1,704024$29 million
High Wind40501$175,000
Winter Storm32503$4.0 million
Thunderstorm Wind26504$1.0 million
Tornado260010$43 million
Heavy Snow15403$22,000
Flash Flood13602$5.2 million
Blizzard12750$5.6 million
Winter Weather8500$390,000
Flood5300$3.5 million
Extreme Cold/Wind Chill1900
Cold/Wind Chill1600
Lightning725$2,000
Funnel Cloud500
Heavy Rain300
Ice Storm200$75,000
Wildfire200
Heat210
Strong Wind100$10,000

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 Pennington County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Pennington CountyEvery warning in Pennington 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.