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.

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

Powerful aftershocks strike Japan days after megaquake advisory issued - The megaquake warning covers approximately 800 miles ...

Japan’s weather agency has warned that another large-scale megaquake could follow the 7.6 magnitude tremor that hit the ...

Authorities are urging residents to review evacuation plans as simulations suggest a ‘maximum-class’ winter night quake could ...

A huge 800-mile stretch of Japan is subject to the megaquake alert — the highest-level warning of its type — following the ...

A 6.7 magnitude earthquake occurred Friday afternoon local time off the northern coast of Japan, the Japan Meteorological ...

The quake struck the country's north just days after a 7.5-magnitude earthquake in the same region injured 50 people.

Scientists say the answer is far more complex than a simple yes or no. Today, risk can be mapped, and early warnings can save ...

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