Japan’s weather agency has issued its highest-level warning that a megaquake could follow Monday’s 7.5-magnitude tremor. Authorities urged anyone living near the Pacific coast to remain vigilant ...

Add Yahoo as a preferred source to see more of our stories on Google. People along hundreds of miles of coastline in Japan are being warned about the possibility of a "megaquake" hitting the country.

TOKYO -- Before the March 2011 Great East Japan Earthquake, a series of signals hinted at what was coming -- ...

A “megaquake” could occur along Japan’s main island north coast in the coming week, authorities said in a rare warning after a 7.5-magnitude tremor shook the same region on Monday. Officials at the ...

Japan issued a megaquake advisory Tuesday after a magnitude 7.5 earthquake struck the northern part of the country, causing 34 mostly mild injuries and some damage to roads and buildings. The ...