putting it together in sequence from the beginning. watch. at 2:46 local time, an 8.9 quake strikes off the east coast of japan. oh, my god. the building is going to fall. it s the most powerful earthquake recorded in the country s history. the fifth most powerful ever recorded in the world. its shockwave churns out walls of water up to 30 feet, traveling up to a mind boggling 500 miles an hour. a tsunami bears down on japan s coast in minutes. looks like that tsunami wave