An earthquake with a preliminary magnitude of 6.2 struck off Japan's northernmost main island of Hokkaido on Sunday, the weather agency said, with no tsunami warning issued.The quake registered a lower 5 on the country's seismic intensity scale of 7 in Chitose and other parts on the southern coast of the prefecture around 6:55 p.m., the Japan Meteorological Agency said. Sapporo, Hakodate and some other cities marked 4 on the scale.There were no immediate reports of casualties due to the earthquake, police and other local authorities said.The quake occurred at a depth of 136 kilometers in wa…READ FULL ARTICLE