There have been a few clusters of thunderstorms in the Upper Midwest today, with large hail and even some isolated tornadoes around Grand Forks. The thunderstorms in South Dakota were notable mostly for their large hail. How large? Let’s ask the weather service in Aberdeen.
Emergency Management has reported goofball sized hail on the northern side of Watertown around 751pm 7/11.
— NWS Aberdeen (@NWSAberdeen) July 12, 2017
Goofball sized hail is the size at which hail needs to be to concuss any goofball that goes outside in such weather.
Storms are continuing overnight into Minnesota, and will be smothering Wisconsin and Michigan by morning.