7.4 is a powerful quake, but no one will take it too seriously when compared to 9.0.Tsunami alert issued for Japan. One meter expectations.Poor people there. My heart goes out to them.
Yahoo cover page has a story about the markers that look like big tombstones in the tsunami area at the edge of high ground warning residents to not go back home after a quake and to not build below the markers. The stones are hunderds of years old.