Tornadoes, hail, floods and severe storms recorded here between 1964 and 2026, from NOAA's Storm Events Database. Search an address to see which tornadoes came closest to it.
The part of each tornado’s path NOAA recorded in this county, 23 in all. Zoom in and the paths widen to their surveyed width.
Hover or tap a bar to see that year.
NOAA's storm database records tornadoes back to 1950 and hail and thunderstorm wind back to 1955, but floods only from 1996 on. Older floods are missing here. For those, the U.S. Geological Survey's stream gauge records and flood reports are the place to look.
The strongest tornadoes, deadliest events and biggest damage here, up to 50.
March 10, 2021 · Hamlin, South Dakota
June 21, 2013 · Hamlin, South Dakota
Severe tree and structural damage occurred on Lake Poinsett with ninety mph winds. A woman was killed and her husband was seriously injured when their lake house was destroyed. A man was also hospitalized for electric shock.
April 15, 2011 · Hamlin, South Dakota
One male and one female in their late twenties were killed around 830 am CDT on the 15th on a slushy U.S. Highway 81. The third person in the car was injured-non life threatening. The car they were driving was hit by a large truck.
January 18, 2010 · Hamlin, South Dakota
April 16, 1967 · Hamlin, South Dakota
June 9, 2026 · Hamlin, South Dakota
Hamlin county Emergency Management estimated thunderstorm winds topped out at 70 mph at Lake Poinsett. Nearby personal mesonet stations located at the Lake Region Golf Course recorded peak wind gusts of 74 and 62 mph. These high winds felled a number of trees in the area, in addi…
June 9, 2026 · Hamlin, South Dakota
June 9, 2026 · Hamlin, South Dakota
A storm chaser reported significant trees damage due to thunderstorm winds.
June 9, 2026 · Hamlin, South Dakota
A resident 2.5 miles east of Castlewood relayed photos of a damaged metal shed and multiple downed trees.
June 9, 2026 · Hamlin, South Dakota
A trained spotter reported that multiple irrigation pivots had been damaged by thunderstorm winds.
June 9, 2026 · Hamlin, South Dakota
The Hamlin county Emergency Manager reported the roof of a metal outbuilding peeled up from thunderstorm winds.
June 9, 2026 · Hamlin, South Dakota
Images relayed through Facebook show trees uprooted 3 miles west of Castlewood.
June 3, 2026 · Hamlin, South Dakota
June 3, 2026 · Hamlin, South Dakota
A trained spotter noted hail damage to crops 3 to 4 miles south of Castlewood.
March 12, 2026 · Hamlin, South Dakota
February 28, 2026 · Hamlin, South Dakota
Two miles north of the Hamlin Education Center, the public reported a total snowfall of 6 inches.
February 18, 2026 · Hamlin, South Dakota
January 23, 2026 · Hamlin, South Dakota
December 18, 2025 · Hamlin, South Dakota
December 18, 2025 · Hamlin, South Dakota
South Dakota Highway Patrol reports that a semi jackknifed along Highway 28 thanks to the combination of strong winds and low visibility in snow. The nearby South Dakota Department of Transportation weather station 4 miles east of Lake Norden recorded a peak wind gust of 50 mph a…
December 9, 2025 · Hamlin, South Dakota
November 28, 2025 · Hamlin, South Dakota
September 2, 2025 · Hamlin, South Dakota
August 22, 2025 · Hamlin, South Dakota
The Big Sioux near Castlewood would go into flood on August 22nd during the morning hours, cresting at 11.42 or 2.42 feet above flood stage on the morning of August 24th. The river would remain in flood through the evening of August 27th.
August 17, 2025 · Hamlin, South Dakota
A trained spotter reported flooding in the Lake Poinsett area, with water over some roadways.
August 17, 2025 · Hamlin, South Dakota
The Hamlin County Sheriffs Office reports numerous secondary roads have water over them including 465th Ave. north of Estelline.
August 16, 2025 · Hamlin, South Dakota
August 16, 2025 · Hamlin, South Dakota
A tornado touched down over cropland just east of 439th Ave and about a half-mile south of 183rd St. The tornado tracked northeast, crossing 183rd St. Tree damage was noted just before the tornado then crossed 440th Ave. The tornado crossed a farmstead where several empty grain b…
August 6, 2025 · Hamlin, South Dakota
The Big Sioux River near Castlewood entered flood stage around mid-day on August 6th. The river would crest at 1030 pm on August 7th at 10.63 feet, or 1.63 feet above flood stage. The river stayed in flood through the morning of August 10th. Flooding was mainly confined to low-ly…
August 5, 2025 · Hamlin, South Dakota
August 1, 2025 · Hamlin, South Dakota
July 27, 2025 · Hamlin, South Dakota
July 27, 2025 · Hamlin, South Dakota
July 27, 2025 · Hamlin, South Dakota
July 27, 2025 · Hamlin, South Dakota
July 27, 2025 · Hamlin, South Dakota
The Big Sioux River near Castlewood went into flood during the evening of July 27th, rising over three feet in four hours due to heavy rainfall from thunderstorms. The COOP observer in Castlewood recorded 5.61 inches of rain. The river crested at 11.44 feet, which is 2.44 feet ab…
July 7, 2025 · Hamlin, South Dakota
A COOP observer reported one-inch hail as a storm moved over Hayti.
June 28, 2025 · Hamlin, South Dakota
June 28, 2025 · Hamlin, South Dakota
June 28, 2025 · Hamlin, South Dakota
June 28, 2025 · Hamlin, South Dakota
June 28, 2025 · Hamlin, South Dakota
June 28, 2025 · Hamlin, South Dakota
Hamlin county emergency management posted photos of flooded fields, ditches full and water running over 465th Ave north of Estelline.
June 20, 2025 · Hamlin, South Dakota
June 19, 2025 · Hamlin, South Dakota
June 19, 2025 · Hamlin, South Dakota
June 19, 2025 · Hamlin, South Dakota
June 19, 2025 · Hamlin, South Dakota
The Hamlin county Emergency Manager estimated winds up to 65 mph and nickel to quarter sized hail.
June 19, 2025 · Hamlin, South Dakota
A caller stated that a large limb had come down with thunderstorm winds in the town of Estelline.
May 15, 2025 · Hamlin, South Dakota