South Dakota Severe Flood Warning | Effective 07/04/2026 18:40

Headline: 
Flood Warning issued July 4 at 8:40PM CDT until July 5 at 1:00AM CDT by NWS Aberdeen SD
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
July 4, 2026 - 6:40pm
Expires: 
July 4, 2026 - 11:00pm
Description: 
* WHAT...Flooding caused by excessive rainfall continues. * WHERE...East Central Lyman County in central South Dakota... * WHEN...Until 100 AM CDT. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS... - At 839 PM CDT, the rain has ended across the area, but flooding remains possible due to the 1.5 to 3 inches of rain that fell earlier in the evening. - Flooding impacts will continue, but no additional rainfall is expected. - Some locations that will experience flooding include... Oacoma. - http://www.weather.gov/safety/flood
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Area Description: 
Lyman, SD
Forcast Office: 
NWS Aberdeen SD