Tsunami warnings have been issued across much of Japan's eastern coastline

Tsunami warnings have been issued across much of Japan's eastern coastline, with authorities urging residents in coastal, riverfront, and lakeside areas in several prefectures to evacuate to higher ground without delay.

Re these:

• Another massive earthquake - magnitude 8.7, Russia east coast
• Tsunami alert after Mag 8 earthquake off east coast of Russia

Also:

• Tsunami Warning issued for the US state of Hawaii