Overview
A thunderstorm developed in western Corson County late in the afternoon on August 28, 2024 and move northeast into southern North Dakota. As that occurred, it turned into a supercell and produced a tornado. Then as new storms developed to the south of the storm and merged with it into northeast Corson County, the storm moved to the east and crossed the Missouri River (Lake Oahe). After crossing the river, the storm produced it's first tornado just to the west of Highway 1804 in Campbell County. The storm continued eastward over the next 1.5-2 hours and produced multiple tornadoes before weakening over McPherson County and eventually moving northeast into North Dakota. |
![]() A wide view of the supercell as it was producing a tornado to the west of Mound City, SD. Photo by Kyle Gillett. |
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Photo taken by Alex Resel at 8:03pm to the west of Mound City, SD | Photo taken by Devin Pitts at 8:10pm to the north of Mobridge, SD. | Photo taken by Quincy Vagell |
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A loop of the surface analysis from 7am CDT on August 28, 2024 to 7am CDT August 29, 2024. | MRMS Low Level Rotation Tracks over north central South Dakota. This shows areas of increased rotation in the lower portions of a storm. The areas in Red, White, and Aqua colors indicate the locations of strongest rotation. | The tornado tracks can be seen in this loop of Sentinel Satellite data. SD 1804 can be seen on the left side of this image, which is to the west-southwest of Mound City, SD. The first image is from 8/25/2024 and the second image is from 8/30/2024. (Data source: Copernicus Sentinel Data 2024) |
Tornadoes:
Tornado - Mound City #1
Track Map ![]() ![]() Downloadable KMZ File |
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Tornado - Mound City #2
Track Map ![]() ![]() Downloadable KMZ File |
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Tornado - Mound City #3
Track Map ![]() ![]() Downloadable KMZ File |
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The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:
EF0 Weak 65-85 mph |
EF1 Moderate 86-110 mph |
EF2 Significant 111-135 mph |
EF3 Severe 136-165 mph |
EF4 Extreme 166-200 mph |
EF5 Catastrophic 200+ mph |
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Photos & Video
Thank you to all of the people below for allowing us to share their pictures of the event.
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Near Mound City, SD (Photo by Alex Resel) | Photo by Alex Resel | Tornado photo by Alex Resel | Tornado photo by Alex Resel |
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Tornado photo by Devin Pitts | Tornado photo by Kyle Gillett | Tornado photo by Quincy Vagell | Tornado photo by Quincy Vagell |
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Photo by Quincy Vagell | Photo by Quincy Vagell | Photo by Sheriff Boll | Tornado photo posted at 8:54 PM CDT near Mound City, SD. (Photo taken by Devin Pitts) |
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Tornado at 8:54 PM CDT to the southeast of Mound City, SD. (Photo taken by Alex Resel) | Tornado at 8:58 PM CDT to the southeast of Mound City, SD. (Photo taken by Alex Resel) | Photo of a funnel at around 9:33 PM CDT around 8 miles to the west of Eureka, SD (Photo by Alex Resel) | Cloud to Ground lightning strikes over the 24 hour period ending at 7am on August 29, 2024. |
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1 Hour Timelapse from the Mound City, SD weather station from the SD Mesonet. Thank you to the SD Mesonet (https://climate.sdstate.edu/) for their capture and sharing of this timelapse. | MRMS Maximum Estimated Hail Size over north central South Dakota. |
Radar & Satellite
Radar Loop of the Tornado Producing Supercell on August 28, 2024. The left panel is the reflectivity and the right panel is the storm relative velocity. The loop is valid from 7:05 PM CDT to 9:20 PM CDT. | MRMS Reflectivity of the August 28, 2024 Tornadic Supercell Event. The loop goes from 4PM CDT to midnight. | GOES-East Satellite Loop of the Tornado Producing Supercell on August 28, 2024. The loop goes from 2:00 PM CDT to Midnight on August 28, 2024. Satellite loop courtesy of College of DuPage Weather. |
Storm Reports
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0608 PM Hail 5 E Walker 45.90N 100.98W 08/28/2024 E1.00 Inch Corson SD Public Time estimated by radar. 0730 PM Hail 10 S Pollock 45.76N 100.28W 08/28/2024 E1.75 Inch Campbell SD Public Chaser reported golf ball sized hail. 0733 PM Hail 10 S Pollock 45.75N 100.30W 08/28/2024 E1.00 Inch Campbell SD Public Quarter sized hail reported south of Pollock. 0745 PM Hail 9 SE Kenel 45.77N 100.32W 08/28/2024 E1.75 Inch Campbell SD Public 0750 PM Tornado 9 WSW Mound City 45.68N 100.24W 08/28/2024 Campbell SD NWS Storm Survey Estimated touchdown time and point as found by Storm Survey of an EF2 rated tornado west of Mound City. 0810 PM Tornado 7 SW Mound City 45.66N 100.17W 08/28/2024 Campbell SD NWS Storm Survey Approximate touchdown time and point as determined by a Storm Survey of an EFU tornado southwest of Mound City. 0820 PM Tornado 6 SW Mound City 45.67N 100.16W 08/28/2024 Campbell SD NWS Storm Survey Approximate touchdown time and point as determined by Storm Survey of an EF1 rated tornado southwest of Mound City. 0850 PM Tornado 3 ESE Mound City 45.71N 100.00W 08/28/2024 Campbell SD NWS Storm Survey Estimated touchdown point of an EFU tornado southeast of Mound City. 0901 PM Tornado 6 ESE Mound City 45.69N 99.95W 08/28/2024 Campbell SD Public Report of a touchdown east of Mound City.
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