Tsunami warnings across Pacific following powerful earthquake in Russia

During the night of 29–30 July 2025, a powerful magnitude 8.8 earthquake struck off the coast of Russia’s Kamchatka Peninsula, which was the strongest quake recorded in the region since 1952.

The quake occurred at a depth of 20.7 km, approximately 126 km from Petropavlovsk-Kamchatsky, the capital of Kamchatka in Russia's Far East.

The seismic event triggered tsunamis in both Russia and Japan, prompting tsunami warnings across multiple countries bordering the Pacific Ocean.

In Severo-Kurilsk, a town of 2 000 people located in the northern part of Russia’s Kuril archipelago, repeated tsunami waves caused significant flooding. All residents were evacuated, and several buildings were reportedly swept away.

In Japan, a 30-centimeter wave was observed off the coast of Hokkaido, the country’s northernmost island.

As a precaution, staff at the Fukushima nuclear power plant, which was hit by a powerful undersea earthquake and tsunami in March 2011, were ordered to evacuate.

In addition to Japan and Russia, tsunami warnings have been issued in several other countries and archipelagos, including Chile, Hawaii, French Polynesia, Mexico, New Zealand, Taiwan and the North American west coast.

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