Mega-tsunami warning: Could a single earthquake drown Seattle and Portland within minutes? New research raises alarm

A new Virginia Tech study warns of a mega-tsunami that could strike the US Pacific Coast if a massive earthquake hits the Cascadia Subduction Zone. Researchers say there is a 15 percent chance of a magnitude 8.0 or greater quake within the next 50 years. Such an event could sink coastal land by more than six feet and unleash waves up to 1,000 feet high. Cities like Seattle and Portland face the gravest danger, with millions at risk and recovery timelines stretched for decades.