[img]http://d.yimg.com/a/p/afp/20100903/capt.photo_1283535319664-1-0.jpg?x=130&y=86&q=85&sig=LgUJJH_DZHNffbIn7Mzqww--[/img]AP - A powerful 7.4-magnitude earthquake struck much of New Zealand's South Island early Saturday. No tsunami alert was issued and there were no reports of injuries.