A tsunami advisory is in effect for Alaska's Aleutian Islands after a 7.8 magnitude earthquake struck off Russia's Kamchatka Peninsula Monday evening.
The US Pacific Tsunami Warning Center said "hazardous tsunami waves" were possible for coasts located within 300 km from the epicenter.
The quake at 23:34 GMT hit 199 kilometres east-southeast of Nikol'skyoe, Russia, the United States Geological Survey said, noting that it struck at a depth of 11.7 kilometres.
The National Weather Service tweeted a tsunami was not expected for California, Oregon, Washington, British Columbia, or mainland Alaska.
The earthquake was originally reported as a 7.4 magnitude quake, but it wwas later upgraded to 7.8.
This is was the second earthquake in the Commander Islands in two days. However, small sea level changes may be observed in the vicinity of the epicenter.
A powerful earthquake shook areas off the coast of eastern Russia late on Tuesday morning, local time, prompting tsunami advisories.
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