After the 8.7 magnitude earthquake in Russia: How far could the tsunami reach and who's most at risk?

Russia Earthquake: A powerful 8.7 magnitude earthquake struck off Russia’s Kamchatka Peninsula on Wednesday, triggering tsunami warnings in Russia, Japan, and across the Pacific including the US west coast, Hawaii and Micronesian islands. Waves up to four metres were recorded in parts of Kamchatka, with minor injuries and damage reported locally. Japan issued an evacuation advisory for its coastal areas. The quake, one of the strongest in over a decade, comes as a reminder of the Pacific Ring of Fire’s volatile tectonic activity.