Waves have hit nations across the Pacific after tsunami alerts were issued when a massive 8.8 magnitude quake struck off Russia's far eastern coast. Hawaii officials have issued an advisory as they continue to monitor conditions and urge residents to remain vigilant. Follow live updates: https://cnn.it/4odztP7 | CNN

A massive 8.8 magnitude earthquake that struck off Russia's east coast is tied for the sixth strongest ever recorded. Tsunami warnings were issued across the Pacific. CNN Meteorologist Chris Warren explains how an earthquake turns into a tsunami. Read more: https://cnn.it/40IeM3G | CNN