Tsunami waves reached Hawaii and the West Coast after one of the strongest earthquakes in recorded history, a magnitude 8.8 temblor, struck off Russia's Kamchatka Peninsula on July 29 before most of the warnings were downgraded hours later.

Hawaii is under a tsunami warning after an 8.7 earthquake hit off the coast of Russia. Parts of Alaska are also under a tsunami warning and watch. The entire west coast of the United States is under a tsunami watch.