A 7.1-magnitude earthquake struck Japan's southwest, prompting a tsunami alert and power outages. Learn more about the Japan earthquake and its impact.

Authorities say 1-metre waves could hit coastal areas after a maximum-intensity tremor shook Kyushu.

A tsunami warning for a wave measuring 1m was issued after the earthquake, the Japan Meteorological Agency said.

A 7.1-magnitude earthquake struck Japan's Kumamoto Prefecture, triggering a tsunami warning and emergency alerts across southern Kyushu.