Japan earthquake: 'Megaquake' warning issued after massive 7.6 quake in northeast | What it means

Japan has issued a Hokkaido–Sanriku Subsequent Earthquake Advisory after the M7.4–7.5 quake, warning that the probability of ...

Japan Earthquake Highlights: ‘Megaquake’ Alert After Devastating 7.5 Magnitude Tremor

A 7.6-magnitude earthquake struck 80km off Japan’s northeast coast late Sunday, sending 40–50cm tsunami waves ashore and ...