The entire U.S. West Coast was facing a tsunami threat after an 8.8 magnitude earthquake erupted off Russia's eastern coast on Tuesday. A tsunami warning was issued in Hawaii, Northern California and in Alaska,

D at 3.45 am, PT… Tsunami warnings for Hawaii have been downgraded to an advisory, following an earlier alert calling for people on the U.S. island state to move to elevated ground in the wake of a massive earthquake off the Russian Pacific coast.