Japan issues tsunami warning after 7.6 magnitude earthquake

A tsunami warning has been issued in Japan after a 7.6 magnitude earthquake in the country’s west. A series of 20 earthquakes have been reported each with a magnitude of four or stronger. A 6.3 magnitude earthquake has also been recorded. Since the initial tsunami warning, parts of Russia and North Korea have also issued tsunami warnings. Tsunami advisories have been issued as far north as the Island of Hokkaido and the southern island of Kyushu