>> i have never seen anything like this. >> reporter: the national weather service called it a particularly dangerous situation, the tornados inflicting heavy damage on the town of pilger, about 100 miles northwest of omaha, nebraska, destroying homes. >> the shingles started blowing through my yard. i watched my hot tub slide and then everything lifted off of us and the heater smashed over me and my buddy. >> there were a couple houses on this side of the street. across the street there were three houses which are gone. there were three houses on the opposite side of the block that are gone. >> reporter: another storm system barreled through south dakota with heavy rains and wind up to 80 miles per hour. and hail as large as a half dollar. a weekend of rain swelled the rock river in iowa, sending a rush of water through the town of rock rapid. and rain and floodwaters severely damaging a golf course in sioux city, iowa. most of the greens under water. >> not going to be open to day,