Posted on November 8, 2021 by Hokkaido NewsQuake info: Light mag. 4.0 earthquake – Sea of Okhotsk, 55 km north of Mombetsu, Monbetsu Shi, Hokkaido, Japan, on Monday, Nov 8, 2021 3:43 pm (GMT +9) – VolcanoDiscovery Quake info: Light mag. 4.0 earthquake – Sea of Okhotsk, 55 km north of Mombetsu, Monbetsu Shi, Hokkaido, Japan, on Monday, Nov 8, 2021 3:43 pm (GMT +9) VolcanoDiscovery