Record-breaking torrential downpours in Chiba prefecture caused catastrophic flooding and landslides, killing four people and stranding thousands at Narita Airport.

Typhoon Dolphin has battered Japan's Okinawa prefecture, injuring five people, before tracking toward China where authorities have shut major ports and suspended flights.

A magnitude 7.1 earthquake struck Kumamoto Prefecture on Kyushu, prompting a tsunami advisory, transit suspensions and power outages.