The magnitude 7.8 earthquake struck off the eastern coast of Russia, prompting close monitoring in Alaska, Hawaii and the U.S. West Coast. But no tsunami waves were detected along the remote island chain and the tsunami advisory was canceled.

The National Tsunami Warning Center had issued an advisory for the western end of the Aleutian Islands, from Amchitka Pass to Attu.

A strong earthquake along Russia's Kamchatka Peninsula caused the National Weather Service to issue a tsunami advisory for parts of Alaska on Thursday.

A major, 7.8-magnitude earthquake struck in the North Pacific Ocean on Friday, according to the United States Geological Survey. The earthquake prompted a brief tsunami advisory, the second-highest alert level, for some coastal portions of western Alaska, which was lifted about two hours later.

According to the Alaska Earthquake Center, the Aleutian megathrust is the primary cause of the strongest earthquakes in the region. The Aleutian megathrust is a major subduction zone fault, an area where two tectonic plates meet.

A 7.8 earthquake off the coast of Russia triggered a Tsunami Advisory for the Aleutian Islands in Alaska on Thursday, but the alert has since been canceled.

Alaska receives tsunami advisory following magnitude 7.8 earthquake off Russia's eastern coast, September 18. National Weather Service warns Western Aleutian Islands residents while California and Hawaii monitor potential tsunami threat with earliest Hawaii arrival projected 2:51 p.

TULARE COUNTY, CA - the U.S. Geological Survey reported that a preliminary 2.0 magnitude quake occurred close to Delano at midday on Thursday.

A 5.1 magnitude earthquake has struck Alaska, the U.S. Geological Survey (USGS) said. The epicenter was recorded at around 90 km southeast of Sand Point, which sits along the Aleutian Chain of volcanic islands. It had a depth of 32.6 km. The USGS said the quake occurred just after midnight local time on Tuesday, August 26.

ALAMEDA COUNTY, CA - A preliminary 2.3 magnitude quake was detected near Berkeley on Tuesday around midnight, according to the U.S. Geological Survey.