Alert archive / South Dakota / Flash Flood Warnings in 2025

Flash Flood Warning 14, NWS Aberdeen, SD

September 12, 2025Corson County, South Dakota

NWS Aberdeen, SD issued this flash flood warning at Sep 12, 2025, 6:49 PM MDT for Corson 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
Sep 12, 2025, 6:49 PM MDT (00:49 UTC)
Expired
Sep 12, 2025, 10:00 PM MDT
In force
3 hr
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Flood severity
None

County Corson County, SD

The radar

The Bismarck radar (KBIS), 123 km from the middle of the area, began a volume at 00:53 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 office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 12, 6:38 PM MDTSevere Thunderstorm WarningABRCorson52 min
Sep 12, 7:26 PM MDTSevere Thunderstorm Warning Considerable damage threatABRCorson49 min
Sep 13, 12:13 AM MDTSpecial Weather StatementABRDewey32 min
Sep 13, 12:45 AM MDTSpecial Weather StatementABRDewey30 min
Sep 13, 2:55 AM MDTSevere Thunderstorm WarningABRPotter, Sully50 min
Sep 13, 3:33 AM MDTSevere Thunderstorm WarningABRFaulk, Potter, Sully30 min
Sep 13, 4:15 AM MDTSpecial Weather StatementABRDewey45 min
Sep 13, 4:57 AM MDTSpecial Weather StatementABRDewey48 min
Sep 13, 5:42 AM MDTSpecial Weather StatementABRWalworth33 min
Sep 13, 6:55 AM MDTSpecial Weather StatementABRCampbell35 min
Sep 13, 10:21 AM MDTAreal Flood WarningABRCorson3 hr

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; radar from the NEXRAD Level II archive.