⚠️ Flash Flood Warning – Lincoln, SD; Turner, SD – Thursday, August 20, 2026

Flash Flood Warning issued August 20 at 8:14PM CDT until August 20 at 11:15PM CDT by NWS Sioux Falls SD

Details

FFWFSD

The National Weather Service in Sioux Falls has issued a

* Flash Flood Warning for…
West Central Lincoln County in southeastern South Dakota…
Northeastern Turner County in southeastern South Dakota…

* Until 1115 PM CDT.

* At 814 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 inches of rain
have fallen. The expected rainfall rate is 1 to 2 inches in 1 hour.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area. 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…
Lennox and Chancellor.

Instructions

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

Be aware of your surroundings and do not drive on flooded roads.

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.