A supercell thunderstorm that developed near Hutchinson quickly intensified early Monday afternoon and produced very large hail from Watertown to Delano and up through the northwest metro area.
https://twitter.com/cityofwatertown/status/1158434234165600256
In Watertown and Delano, hail the size of tennis balls, baseballs and even one report of a grapefruit-sized hailstone have been reported.
https://twitter.com/GvanBergen/status/1158454692525088769/photo/1