Thunderstorm Wind in McPherson County, South Dakota

A trained spotter estimated wind speeds close to 60 mph 5 miles north northeast of Leola, however they noted no damage occurred with these high winds.

Isolated strong storms produced high winds, hail and flooding in portions of northeast South Dakota. Hail to the size of quarters was recorded 6 miles southeast of the town of Roscoe and near the town of Leola. Additionally, winds were estimated at 60 mph 5 miles north northeast of Leola, with a 59 mph peak wind recorded on the Sand Lake RAWS. The primary impact of these storms was the heavy rainfall around the Leola area. The SDSU mesonet station on the east side of Leola recorded 5.48 inches of moisture with this system. Flooding in the town of Leola impacted many residents with street and basement flooding. 6 to 12 inches of water was observed covering portions of Highway 10 just west of town and heavy equipment was required to move water and debris. Highway 45 south of town was also impassible due to flooding.