Central Japan may experience earthquakes with maximum intensity on its seven-tier scale system in the coming week, the Japan Meteorological Agency (JMA) said on Monday.
Torrents of water could reach as high as 5 meters and authorities urged people to flee to high land or a top of a nearby building as quickly as possible, according to NHK.
The Japan Meterological Agency reported quakes off the coast of Ishikawa and nearby prefectures shortly after 4 p.m., one of them with a preliminary magnitude of 7.6.
According to the China Earthquake Networks Centre, the shallow quake jolted Gansu and Qinghai provinces at 11:59 p.m. on Monday, with a focal depth of 10 kilometres.