Japan issued a tsunami advisory on Monday after a magnitude ... The area was hit by a 7.1 magnitude quake in August last year.

The area was hit by a 7.1 magnitude quake in August last year. A strong earthquake with a preliminary magnitude of 6.9 hit southwestern Japan on Monday, triggering public warnings to stay away ...

A 6.8-magnitude earthquake struck southwestern Japan late ... of a "megaquake" was higher than normal following a magnitude 7.1 jolt that injured 15 people. That was a particular kind of tremor ...

The Nankai Trough, where the Philippine Sea Plate is slipping under the Eurasia Plate at the bottom of the sea off the southwest coast of Japan, produces massive earthquakes about every 100-150 years.