Heavy Rain in South Dakota

Events

85

Deaths

1

Injuries

4

Damage

$182,000

• Tornadoes and Flash Flood in South Dakota, May 10, 20159 injured · $1.5 million · EF2 · 14 eventsThunderstorms over southeast South Dakota from late morning to the start of the evening on May 10th produced several tornadoes, including one that caused injuries and severe damage in Delmont in Douglas County.
• Heavy Rain in South Dakota, July 8, 20211 death · 4 injured · 1 eventLow visibility from heavy rain and fog contributed to the collision of two boats on Indian Springs Lake, southeast of Clark, resulting in one fatality and four injuries.
• Flash Flooding and Flooding in South Dakota, June 16 to 18, 2014$4.2 million · 1.75 in hail · 45 eventsThunderstorms produced numerous events of large hail, damaging winds, flash flooding, and areal flooding across most of southeast South Dakota from late morning through the evening of June 16th. The areal flooding was a longer term event and persisted through much of June 18th.
• Flooding and Heavy Rain in South Dakota, May 21 to 27, 2019$5.2 million · 22 eventsA powerful storm system slowly moved from the Four Corners region northeastward through the Plains, leading to a prolonged period of precipitation across western South Dakota May 20-22.
• Flash Flooding and Flooding in South Dakota, May 26 to 28, 2019$2.4 million · 7 eventsAfter major to record flooding due to widespread heavy precipitation during the previous week, conditions were primed for additional flooding when rain began May 26.
• Flash Flood and Flood in South Dakota, August 2 to 3, 2019$1.0 million · 3 eventsNearly stationary thunderstorms developed over and near Custer during the early afternoon. Radar estimated six to seven inches of rain fell west of Custer, with measured observations as much as 5.35 inches.
• Hail and Damaging Wind in South Dakota, August 11, 2006$250,000 · 2.5 in hail · 8 eventsSevere thunderstorms developed across southeast Harding County and moved eastward across southern Perkins County. These storms produced large hail and wind gusts to 70 mph.
• Flash Flooding and Heavy Rain in South Dakota, July 29 to 30, 2010$250,000 · 6 eventsHeavy rain from thunderstorms caused flash flooding at scattered locations in southeast South Dakota during the late evening of July 29th into the early morning predawn hours of July 30th.
• Flash Flood and Hail in South Dakota, May 29, 2014$150,000 · 1.75 in hail · 12 eventsA cluster of thunderstorms developed and regenerated over southwestern Meade County during the late afternoon and early evening. Quarter to golf ball size hail occasionally fell in the Bear Butte area.
• Flash Flooding and Damaging Winds in South Dakota, July 21 to 22, 2010$100,000 · 61 kt wind · 10 eventsThunderstorms produced damaging winds at a few places west of the James River, then produced heavy rain and flash flooding along a path near Interstate 90 from Mitchell to Sioux Falls. The storms moved across the area during the evening of July 21st.
• Hail and Heavy Rain in South Dakota, May 5, 2007$67,000 · 1.75 in hail · 13 eventsA slow moving upper level storm system brought severe thunderstorms to southwestern and south central South Dakota. The storms produced hail to golf ball size from Shannon County to Tripp County. Heavy rain across parts of the area also caused creeks and rivers to rise.
• Heavy Rain in South Dakota, July 16 to 17, 1996$100,000 · 1 eventHeavy rain of 6 to 10 inches fell over southern Union County and caused lowland and basement flooding, with the worst conditions reported at Dakota Dunes.
• Flash Flood and Heavy Rain in South Dakota, May 18, 2018$50,000 · 2 eventsSlow moving thunderstorms produced heavy rain over Rapid City. The runoff caused flash flooding in parts of the city.
• Flash Flooding and Hail in South Dakota, May 25 to 26, 2013$30,000 · 1.75 in hail · 9 eventsThunderstorms produced flash flooding and large hail in southeast South Dakota from late evening of May 25th into the morning of May 26th.
• Flash Flooding and Damaging Winds in South Dakota, June 20, 2011$20,000 · 61 kt wind · 8 eventsThunderstorms produced flash flooding and damaging winds at several locations in southeast South Dakota during the evening of June 20th. The thunderstorms affected the area from the Missouri River to Interstate 90.
• Hail and Damaging Winds in South Dakota, August 14, 20171.75 in hail · 19 eventsA severe thunderstorm developed over the northeastern slopes of the Black Hills and tracked slowly southeast through the Rapid City area before weakening east of the Black Hills. The storm produced hail to golf ball size, wind gusts over 60 mph, and heavy rain.
• Hail and Damaging Wind in South Dakota, August 21, 20172 in hail · 17 eventsMorning Widespread thunderstorms developed across portions of south central and southeast South Dakota and produced large hail and heavy rain. The hail resulted in crop damage and the heavy rain caused flooding in a few areas of southeast South Dakota.
• Flash Flood and Hail in South Dakota, July 3 to 4, 20221.25 in hail · 17 eventsAn area of low pressure and associated frontal boundaries brought several severe thunderstorms to central, north-central, and northeastern South Dakota from the evening of July 3rd to the early morning hours of July 4th.
• Tornado and Flash Flooding in South Dakota, July 5 to 6, 2015$4,000 · EF0 · 16 eventsThunderstorms produced damaging winds and flash flooding as they moved east across southeast South Dakota during the evening of July 5th into the post midnight hours of July 6th. There was also one tornado that caused crop damage.
• Hail and Heavy Rain in South Dakota, June 1, 20084.25 in hail · 12 eventsSevere thunderstorms developed along the eastern slopes of the Black Hills and dropped large hail and heavy rain over eastern Custer and Shannon Counties. Softball sized hail was reported south of Hermosa.
• Flash Flood and Hail in South Dakota, July 31, 20161.75 in hail · 12 eventsA slow moving severe thunderstorm developed over northwestern Harding County and tracked southeast across the county. The storm produced hail to golf ball size and strong wind gusts.
• Hail and Damaging Winds in South Dakota, April 27 to 28, 20252 in hail · 12 eventsSevere storms developed across western South Dakota and brought severe hail and wind.
• Hail and Damaging Winds in South Dakota, August 7, 20061.75 in hail · 9 eventsSevere thunderstorms developed over the northern Black Hills and moved slowly southeast into the Rapid City area. These storms produced hail to the size of golf balls and wind gusts to 60 mph.
• Tornadoes and Flash Flooding in South Dakota, August 3, 2010EF0 · 9 eventsThunderstorms produced a tornado, damaging winds, and flash flooding in southeast South Dakota, mostly near Interstate 90, during the evening of August 3rd.
• Flash Flooding and Hail in South Dakota, June 1, 2014$10,000 · 1 in hail · 9 eventsThunderstorms produced damaging winds, large hail, and flash flooding over southeast South Dakota on the afternoon and evening of June 1st. The severe weather and flash flooding affected the area east of the James River.

Heavy Rain everywhereEvery kind of event in South Dakota

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.