⚠️ Flash Flood Warning – Brown, SD; Day, SD – Thursday, July 30, 2026

Flash Flood Warning issued July 30 at 4:51PM CDT until July 30 at 10:45PM CDT by NWS Aberdeen SD

Details

FFWABR

The National Weather Service in Aberdeen has issued a

* Flash Flood Warning for…
Central Brown County in northeastern South Dakota…
Western Day County in northeastern South Dakota…

* Until 1045 PM CDT.

* At 451 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 3 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…
Aberdeen, Groton, Bath, Columbia, Westport, Putney, Tacoma Park,
Sand Lake Wildlife Refuge, Houghton, Barnard and Richmond Lake Rec
Area.

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.