I been hearing this since T.T. Minor Elementary....I remember from years ago about every 300 years there is a mega quake here in the Northwest and they say that 300 year was up in ? 1991.....
http://www.msnbc.msn.com/id/35674095/ns/technology_and_science-science/?GT1=43001
http://www.msnbc.msn.com/id/35674095/ns/technology_and_science-science/?GT1=43001