A 7.6 magnitude earthquake strikes near Japan's northern coast overnight

Breaking news in Japan. A tsunami advisory is now in effect following a powerful 7.6% magnitude earthquake. >> The quake struck about 50 miles off the country's northern coast.Thousands of people have been evacuated. >> The biggest fear is that this may not be over yet, that there could still be further tremors, further earthquakes. There are power lines down in some areas.Uh train services have been suspended. Some 90,000 people have been told to evacuate their homes. It's probably not until the sun comes ...