Officials said the megaquake advisory is not a prediction and the probability of a magnitude 8 or larger quake is only about ...

Japan is learning what life is life under a megaquake watch. NPR's Rob Schmitz talks to Richard Allen, director of the Berkeley Seismology Lab, about what it means.

After a 7.5-magnitude earthquake on Monday, Japanese officials issued a rare warning for a potentially even larger follow-up.

Japanese authorities say a megaquake could cause a devastating tsunami to strike eastern coastal areas of Japan ...

"Please stay prepared to evacuate immediately if you feel any shaking, while continuing your socioeconomic activities.” ...

Japan’s latest disaster advisory has revived a chilling term in the seismology world: “megaquake.” The warning followed a ...

JAPAN’S weather agency has issued its first-ever megaquake warning in the north of the country after a horrific magnitude 7.6 ...

Japan has been struck by another strong earthquake — a 6.9-magnitude tremor hitting the same Pacific coastal region shaken by ...

Japan’s government has issued a rare “megaquake advisory” after a 7.5 magnitude earthquake struck off the country’s northern ...

A MEGA 5.7 magnitude tremor has struck Honshu, Japan, only days after another quake threatened massive 10ft tsunami waves.

Japan issued a megaquake advisory on Tuesday, a day after an earthquake of magnitude 7.5 struck off the country's eastern ...

Japan is warning about a potential megaquake after a massive earthquake struck parts of the country. CBS News' Errol Barnett ...