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.

A major earthquake off the coast of Russia set off widespread tsunami alerts and evacuations all across the Pacific. It was the strongest quake on the planet since 2011, and the sixth largest ever recorded.