Tsunami warnings have been issued in several countries after an 8.8-magnitude earthquake struck off the coast of Russia, with millions evacuated across Russia, the US and Japan

A Tsunami could hit Japan, the US, and Russia. Following the 8.8 magnitude earthquake that hit Petropavlovsk-Kamchatsky, Russia, on Wednesday (July 30), Tsunami waves have been spotted in Northern Hokkaido in Japan.

One of the most powerful earthquakes in decades has struck Russia's far east, causing 5m tsunami waves and prompting evacuations from Japan to Hawaii.