Overview

• The early-morning 8.8-magnitude quake struck offshore at a depth of 19.3 km, shaking buildings around Petropavlovsk-Kamchatsky and injuring several people without causing fatalities.
• Tsunami warnings for Hawaii, Alaska, Japan and the US West Coast were issued after the quake, then lifted or downgraded within 11 hours, though some remote island alerts remain in effect.
• Hours after the tremor, Klyuchevskoy—Eurasia’s tallest active volcano—erupted, sending red-hot lava down its western slope and producing explosive glows visible for miles.
• Emergency teams from the US Geological Survey, Pacific and National Tsunami Warning Centers and Russia’s Geophysical Survey have coordinated evacuations, inspections and real-time monitoring.
• The back-to-back seismic and volcanic events underscore the Pacific Ring of Fire’s volatile subduction dynamics and the critical role of rapid warning systems for coastal communities.