An isolated thunderstorm fired up over the central Black Hills bring heavy rains and large hail with it. Golf ball size hail (1.75") was reported about 3 miles southeast of Deerfield in Pennington County. Also ping pong ball size hail (1.50") dropped for this thunderstorm about 2 miles southwest of Rochford.
Heavy rain was also been reported with an inch and half was reported by a trained weather spotter in Mystic.
Another severe thunderstorm has formed to the south. Get the latest severe weather alerts and radars at our Severe Weather Page.