Posted on January 21, 2021 by Hokkaido NewsQuake info: Mag. 4.6 earthquake – Japan Sea, 41 km northeast of Yagishiri Island, Hokkaido, Japan, on Thursday, 21 Jan 2021 4:54 pm (GMT +9) – VolcanoDiscovery Quake info: Mag. 4.6 earthquake – Japan Sea, 41 km northeast of Yagishiri Island, Hokkaido, Japan, on Thursday, 21 Jan 2021 4:54 pm (GMT +9) VolcanoDiscovery