Mini-tornadoes tear up the coastline HOUSES exploded, a trampoline was flung into power lines and a man was sucked out of his room and left clinging to a ledge as "mini-tornadoes" hit Sydney and the NSW south coast when two wild storms smashed into each other yesterday. Microbursts from the sea struck along a line from Sydney's eastern suburbs down to Kiama, south of Wollongong, stunning locals with what they described as a tremendous roar that came almost as quickly as it left.