EF1 tornado in Grant County, South Dakota

Two properties near the intersection of 164th St and 475th Ave sustained damage. The first farm had a roof ripped off a barn, damage to a machine shed, a destroyed stave silo, debris pierced through house walls, roof panels off house, broken house windows, snapped and uprooted trees, and a dented grain bin. The second residence had half a barn roof ripped off and tossed a quarter mile to the northeast. The track continued northeast roughly six miles, crossing Grant County Highway 15, between 158th St and 159th St. Near this location a farmstead sustained complete loss of a machine shed and power lines were downed. The track would come to an end roughly two more miles to the northeast near 157th St, where another farm would sustain complete loss to a machine shed and debris spread across the field to the north northeast.

Storms redeveloped in the late morning, with supercell characteristics across eastern South Dakota producing up to one inch diameter hail and winds of 70 mph, in addition to 6 confirmed tornadoes, one of which was rated EF3. Heavy rain also occurred with this system, with the greatest amount of rainfall measured by a CoCoRaHS observer being 4.69 inches measured near Columbia, and the highest COOP observer report coming out of Milbank with a two day total of 2.86. This heavy rain resulted in flooding in several rural locations but also included parts of Watertown and Aberdeen.