Flash Flood in Hamlin County, South Dakota

Flash Flood June 28, 2025 – June 29, 2025 · Hamlin County, South Dakota

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

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

The wider storm

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.

Began near Estelline Muni Arpt (44.5900, -96.9200).

Other tornadoes from the same storm system

3 more tornadoes the National Weather Service filed under this storm episode.

EF3 Deuel County EF2 Deuel County EF0 Deuel County

Source: NOAA Storm Events Database, event 1277320. Narratives are written by the National Weather Service forecast office that issued the report.

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