ENGLISHHealthHOMEWorld Earthquake of magnitude 6.0 jolts Japan’s Hokkaido 11/08/2023 Earthquake of magnitude 6.0 jolts Japan's Hokkaido. Tokyo, (Samajweekly) A magnitude 6.0 earthquake struck Hokkaido in Japan on Friday, German Research Centre for Geosciences (GFZ) said. The quake’s epicentre was 46 km (28.58 miles) below the Earth’s surface, GFZ added as quoted by Reuters report.