Alert archive / South Dakota / Flash Flood Warnings in 2025
Flash Flood Warning 6, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Jul 23, 2025, 6:11 PM CDT for Lincoln County, Minnehaha County, South Dakota. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 23, 2025, 6:11 PM CDT (23:11 UTC)
- Expired
- Jul 23, 2025, 9:15 PM CDT
- In force
- 3 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lincoln County, SD, Minnehaha County, SD
The radar
The Sioux Falls radar (KFSD), 13 km from the middle of the area, began a volume at 23:15 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 11.2 hours before the alert went out and 205 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1911 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 755 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.6
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sioux Falls, SD wrote its last area forecast discussion before this flash flood warning went out at Jul 23, 2:28 PM CDT, 3 hours 43 minutes earlier.
Area forecast discussion, Jul 23, 2:28 PM CDT, 3 hours 43 minutes before
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</html>Hazardous weather outlook, Jul 23, 3:45 PM CDT, 2 hours 26 minutes before
Hazardous Weather Outlook National Weather Service Sioux Falls SD 345 PM CDT Wed Jul 23 2025 MNZ071-072-097-098-SDZ038>040-050-052>070-242045- Lincoln-Lyon-Pipestone-Rock-Beadle-Kingsbury-Brookings-Gregory- Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson-McCook- Minnehaha-Charles Mix-Douglas-Hutchinson-Turner-Bon Homme-Yankton- Clay- 345 PM CDT Wed Jul 23 2025 This Hazardous Weather Outlook is for southwest Minnesota, central South Dakota, east central South Dakota, south central South Dakota and southeast South Dakota. .DAY ONE...This afternoon and tonight. This afternoon strong to severe storms will be possible. As they strengthen they may produce hail up to the size of a half dollar. They will then grow into a line and transition to a wind threat with gusts to 70 mph. In addition, locally heavy rain and some smaller hail is possible as well. Some very isolated locations could receive 3 to 5 inches of rain. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. An Air Quality Alert has been issued for southwestern Minnesota for Thursday and Friday. Isolated showers and thunderstorms will be possible Friday into the weekend with a storm or two possibly becoming severe. More hot and humid conditions are likely this weekend and into early next week with heat index values in the 90s to lower 100s possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. IAZ001>003-012>014-020>022-031-032-MNZ080-081-089-090-NEZ013-014- SDZ071-242045- Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee- Buena Vista-Woodbury-Ida-Murray-Cottonwood-Nobles-Jackson-Dixon- Dakota-Union- 345 PM CDT Wed Jul 23 2025 This Hazardous Weather Outlook is for northwest Iowa, west central Iowa, southwest Minnesota, northeast Nebraska and southeast South Dakota. .DAY ONE...This afternoon and tonight. Hot and humid conditions will continue this afternoon with heat indices up to 105 degrees possible. Please be sure to drink plenty of water if you will be outside today. Late this afternoon strong to severe storms will be possible. As they strengthen they may produce hail up to the size of a half dollar. They will then grow into a line and transition to a wind threat with gusts to 70 mph. In addition, locally heavy rain and some smaller hail is possible as well. Some very isolated locations could receive 3 to 5 inches of rain. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. An Air Quality Alert has been issued for southwestern Minnesota for Thursday and Friday. Isolated thunderstorms will be possible Friday into the weekend with a storm or two possibly becoming severe. More hot and humid conditions are likely this weekend and into early next week with heat index values in the 90s to lower 100s possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Jul 23, 12:20 PM CDT, 5 hours 51 minutes before
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</html>Local storm report, Jul 23, 2:41 PM CDT, 3 hours 30 minutes before
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</html>Local storm report, Jul 23, 2:43 PM CDT, 3 hours 28 minutes before
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</html>Local storm report, Jul 23, 2:44 PM CDT, 3 hours 27 minutes before
Preliminary Local Storm Report
National Weather Service Sioux Falls SD
244 PM CDT Wed Jul 23 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0933 AM Tstm Wnd Dmg 11 NW Yale 44.56N 98.13W
07/23/2025 Beadle SD Emergency Mngr
Roof blown off post frame building. Time
estimated from radar.
&&
JCLocal storm report, Jul 23, 2:49 PM CDT, 3 hours 22 minutes before
Preliminary Local Storm Report
National Weather Service Sioux Falls SD
249 PM CDT Wed Jul 23 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0918 AM Tstm Wnd Dmg 2 N Huron 44.39N 98.22W
07/23/2025 Beadle SD Public
About 20 trees downed at golf course. Time
estimated based on KHON ASOS observation.
&&
PRThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 6:58 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Douglas | 32 min |
| Jul 23, 7:20 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Hanson, Jerauld, Sanborn | 40 min |
| Jul 23, 7:47 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld, Sanborn | 43 min |
| Jul 23, 8:15 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury, Miner | 45 min |
| Jul 23, 8:15 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld | 60 min |
| Jul 23, 8:28 AM CDT | Severe Thunderstorm Warning | FSD | Beadle | 62 min |
| Jul 23, 9:00 AM CDT | Severe Thunderstorm Warning | FSD | Beadle | 45 min |
| Jul 23, 9:30 AM CDT | Severe Thunderstorm Warning | FSD | Beadle | 30 min |
Nearby
Flash Flood Warnings in South Dakota, 2025Every flash flood warning in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.