BREAKING: A massive 9.1-magnitude earthquake has struck off the northeast coast of Japan, triggering a powerful tsunami and widespread panic across the country. 
The quake hit near Miyagi Prefecture, with strong shaking felt even in Tokyo. Officials say it may be the strongest earthquake Japan has recorded in over a century.
Emergency alerts sounded nationwide as infrastructure damage, power outages, and disruptions to basic services continue to grow. Authorities are urging people to stay alert and follow evacuation orders.