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8.8-Magnitude Quake Triggers Eruption of Kamchatka’s Klyuchevskoy Volcano

Authorities have issued tsunami alerts across the Pacific following the seismic-triggered eruption.

Volcano in Russia's Kamchatka | Image: X
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Rescuers examine a damaged building following a powerful earthquake on the island of Sakhalin, Russia, July 30, 2025, in this still image taken from video.
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Overview

  • Hours after an 8.8-magnitude quake off Russia’s Pacific coast on July 30, the Klyuchevskoy volcano on the Kamchatka Peninsula began erupting.
  • The Russian Academy of Sciences’ United Geophysical Service reported streams of molten lava spilling down the volcano’s western slope alongside powerful glows and explosive activity.
  • Scientists had predicted the eruption for weeks after detecting increased crater lava accumulation and rising ash emissions.
  • The initial tremor generated tsunami waves up to four meters high along Kamchatka’s coast, prompting evacuations in Russia and on Japan’s eastern shores.
  • Kamchatka, which contains about 300 volcanoes with 29 considered active, remains on high alert as authorities track ongoing seismic and volcanic unrest.