The National Tsunami Warning Center issued a tsunami advisory along the West Coast of the United States and British Columbia, Canada.[79][80] The advisory contained all U.S. areas along the West Coast from Southern California to Alaska.[81] Beaches were closed,[82] and coastal residents were requested to move to higher grounds.[83] Tsunami waves measuring 1–2 feet (0.30–0.61 m) are expected to hit the shores as early as 7:30 a.m.