999 first-hand accounts of flood events in South Dakota, ranked by impact. Each is a NOAA-written narrative of the moment.
An unstable warm sector with MUCAPE up to 2000-2500 J/kg developed during the afternoon between an advancing cold front across southeast South Dakota and a gangly warm front extending into southwest Minnesota.
Read the full account →An unstable warm sector with MUCAPE up to 2000-2500 J/kg developed during the afternoon between an advancing cold front across southeast South Dakota and a gangly warm front extending into southwest Minnesota.
Read the full account →A slow-moving thunderstorm briefly became severe over central Pennington County into north central Custer County, producing hail up to golf ball size along with heavy rainfall.
Read the full account →A slow-moving thunderstorm briefly became severe over central Pennington County into north central Custer County, producing hail up to golf ball size along with heavy rainfall.
Read the full account →A slow moving cluster of thunderstorms resided near Yankton for a couple hours, with a deep warm cloud layer resulting in extremely efficient rainfall rates of up to 3-4 inches per hour at times.
Read the full account →A slow moving cluster of thunderstorms resided near Yankton for a couple hours, with a deep warm cloud layer resulting in extremely efficient rainfall rates of up to 3-4 inches per hour at times.
Read the full account →Slow moving thunderstorms produced heavy rain over southern Perkins County. Radar precipitation estimates indicated two to four inches of rain fell.
Read the full account →Numerous thunderstorms developed along a stationary front and trained over the same locations producing very heavy rains along with large hail. Very heavy rains of 2 to nearly 5 inches resulted in the flash flooding of numerous roads. Several of the roads were washed out.
Read the full account →Heavy rainfall resulted in river flooding along the Big Sioux near Castlewood during he early morning hours of May 23rd. The river peaked at 9.22 feet above flood stage, and remained in flood through the afternoon.
Read the full account →Heavy rain from thunderstorms on May 6th resulted in flooding along the Big Sioux River near Castlewood starting around mid-day on May 8th. The river crested at 9.1 feet before falling later that evening.
Read the full account →Heavy rain falling on snow remaining from from the previous week's blizzard caused flooding over northwestern South Dakota, the northern Black Hills, and the northern foothills.
Read the full account →Numerous thunderstorms developed along a stationary front and trained over the same locations producing very heavy rains along with large hail. Very heavy rains of 2 to nearly 5 inches resulted in the flash flooding of numerous roads. Several of the roads were washed out.
Read the full account →Thunderstorms produced heavy rains of 2 to 6 inches across a large portion of central and western Corson County (isolated 6 to 10 inches) during severe to extreme drought on the evening of June 8th.
Read the full account →River flooding due to snowmelt and excess moisture was already ongoing along portions of the James at the start of the month and did not abate.
Read the full account →A slow moving storm and heavy downpour resulted in urban flooding within the city of Pierre. The COOP observer in town recorded 2.84 inches of rain, while the ASOS at the Airport recorded 1.68 inches during a 2 hour span.
Read the full account →A trailing supercell thunderstorm tracked across northeastern Wyoming and across the northern Black Hills and west central South Dakota. This storm brought large hail to the Spearfish, Lead, Deadwood, and Sturgis areas, as well as portions of the southern Meade County plains…
Read the full account →A trailing supercell thunderstorm tracked across northeastern Wyoming and across the northern Black Hills and west central South Dakota. This storm brought large hail to the Spearfish, Lead, Deadwood, and Sturgis areas, as well as portions of the southern Meade County plains…
Read the full account →A trailing supercell thunderstorm tracked across northeastern Wyoming and across the northern Black Hills and west central South Dakota. This storm brought large hail to the Spearfish, Lead, Deadwood, and Sturgis areas, as well as portions of the southern Meade County plains…
Read the full account →Repeated thunderstorm development on an east-west boundary across the Sioux Falls metro area produced a localized 3 to 6 inches of rainfall in a few hours.
Read the full account →Repeated thunderstorm development on an east-west boundary across the Sioux Falls metro area produced a localized 3 to 6 inches of rainfall in a few hours.
Read the full account →Repeated thunderstorm development on an east-west boundary across the Sioux Falls metro area produced a localized 3 to 6 inches of rainfall in a few hours.
Read the full account →Heavy rains of 3 to 6 inches fell from around midday through the afternoon hours causing flash flooding across parts of Spink, Clark, and Day counties. Many county and township roads were flooded with several of the roads damaged or completely washed out.
Read the full account →Heavy rains of 3 to 6 inches fell from around midday through the afternoon hours causing flash flooding across parts of Spink, Clark, and Day counties. Many county and township roads were flooded with several of the roads damaged or completely washed out.
Read the full account →Storms tracked across north central and northeast South Dakota during the evening hours of July 24th and into July 25th. Developing in a very moisture rich atmosphere, the storms were able to produce very heavy rain in a short amount of time, especially over parts of…
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