Flash Flood in Minnehaha County, South Dakota

Flash Flood May 31, 2026 · Minnehaha County, South Dakota

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

What the National Weather Service wrote

A small portion of Hwy 38 between Hartford and Humboldt (between 459th and 460th Ave) was impassable due to water over the road. Water was 3-4 feet deep in a couple of spots, but appeared to be slowly receding. Deputies had requested DOT barricades to close that section of road until the water fully receded.

The wider storm

A slow moving and persistent thunderstorm brought as much as 1 to 3 inches of rain in a short period of time to a small portion of Minnehaha County. This resulted in the flooding and subsequent closure of Hwy 38 between Hartford and Humboldt.

Began near Humboldt (43.6430, -97.0290).

Source: NOAA Storm Events Database, event 1328495. Narratives are written by the National Weather Service forecast office that issued the report.

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