South Dakota

Storm History: Hamlin County, South Dakota

465 episodes, 634 events since 1964

Every storm the National Weather Service has filed in Hamlin 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
634
Deaths
7
Injuries
24
Damage
$16 million
Episodes
465

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 Hamlin 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
Hail17102$3.0 million
Tornado116115$543,000
Blizzard6002$5,000
Flood5100$12 million
Flash Flood4100$100,000
Extreme Cold/Wind Chill3700
Heavy Snow2811
High Wind2700$5,000
Winter Storm2700
Drought2200
Thunderstorm Wind1100
Winter Weather1022
Ice Storm900$31,000
Excessive Heat900
Lakeshore Flood800
Cold/Wind Chill300
Dense Fog232
Heat100
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 Hamlin County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Hamlin CountyEvery warning in Hamlin 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.