Flash Flood — Hamlin, South Dakota

2025-06-28 to 2025-06-29 · near Estelline Muni Arpt, Hamlin, South Dakota

Event narrative

Hamlin county emergency management posted photos of flooded fields, ditches full and water running over 465th Ave north of Estelline.

Wider weather episode

A volatile atmospheric setup on the afternoon and evening of June 28th led to the development of several powerful supercell thunderstorms across far eastern South Dakota. These storms produced multiple tornadoes, including two that caused significant damage in Deuel County. The strongest tornado was rated as a high-end EF3. Storms also produced large hail and instances of flash flooding from heavy rainfall.

View location on OpenStreetMap → (44.5900, -96.9200)

Source: NOAA Storm Events Database, event_id 1277320. Narrative written by the NWS forecast office that issued the report.