The 8.8 magnitude quake off Russia that triggered tsunami warnings across the Pacific occurred on what is known as a "megathrust fault", where the denser Pacific Plate is sliding underneath the lighter North American Plate,

Videos show the moment when a massive earthquake hit Russia on July 29, leaving residents clinging to furniture as buildings convulsed beneath them. A magnitude 8.8 earthquake with a depth of about 12 miles struck off Russia's Kamchatka Peninsula at 7:24 p.

Japan's meteorological agency warned that a tsunami about 1 meter (3 feet) high was expected to reach Hokkaido in the north around 10:00 a.m., local time, with waves arriving later in the day along parts of eastern Honshu and Kyushu in the south.

A powerful magnitude 8.8 earthquake off Russia's far-eastern Kamchatka Peninsula Tuesday triggered tsunami waves across the Pacific Ocean. Russia said the shallow quake caused damage in Petropavlovsk-Kamchatsky and elsewhere on the peninsula and flooded the Kuril Islands with waves as high as 19 feet.