Tsunami threat is over after several large quakes off Russia's Pacific coast

On Sunday, a 7.4-magnitude earthquake struck 144 kilometers east of Russia's Petro-PAV-lovsk-Kam-CHAT-sky city.

The tremors triggered tsunami alerts, which were later lifted.

The Pacific Tsunami Warning Center and U.S. National Tsunami Center issued coastal warnings for Kamchatka, Hawaii, Guam, and American Samoa.

Roughly two hours later, all alerts were officially downgraded and lifted.

There have been no reports of casualties or structural damage, and seismic activity has subsided.

Authorities warn that the Kamchatka Peninsula remains a high-risk seismic zone.