⚠️ Flash Flood Warning – Big Stone, MN; Traverse, MN; Day, SD; Marshall, SD; Roberts, SD – Thursday, July 30, 2026

Flash Flood Warning issued July 30 at 6:25PM CDT until July 31 at 12:30AM CDT by NWS Aberdeen SD

Details

FFWABR

The National Weather Service in Aberdeen has issued a

* Flash Flood Warning for…
Northwestern Big Stone County in west central Minnesota…
Southwestern Traverse County in west central Minnesota…
Northeastern Day County in northeastern South Dakota…
Southeastern Marshall County in northeastern South Dakota…
Southwestern Roberts County in northeastern South Dakota…

* Until 1230 AM CDT Friday.

* At 625 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3.5 inches of rain
have fallen. Flash flooding is ongoing or expected to begin
shortly.

HAZARD…Flash flooding caused by thunderstorms.

SOURCE…Radar indicated.

IMPACT…Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.

* Some locations that will experience flash flooding include…
Sisseton, Agency Village, Browns Valley, Wilmot, Enemy Swim
Housing, Beardsley, Peever, Grenville, Barry, Peever Flats Housing,
Dakota Connection & Casino, Lake Traverse Housing Units, Finley
Heights Housing, Yankeetown, Traverse Country Park, Bonanza Grove,
Lake Traverse, Rainbow Island, Rudebusch Corner and Big Stone Lake.

Instructions

Turn around, don’t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.