Overview

• Kracheninnikov volcano erupted on August 3 for the first time since 1550, ending over four centuries of dormancy.
• A flank fissure and newly formed lava dome are emitting strong gas plumes as ash drifts eastward over the Pacific.
• Officials report no inhabited areas or tourist groups are at risk but have maintained an orange-level aviation alert.
• More than 65 earthquakes rattled the peninsula Saturday, including tremors felt in Petropavlovsk-Kamchatsky, and seismic swarms continue.
• Scientists link the eruption to heightened geological unrest following a magnitude 8.8 offshore quake and the earlier Klyuchevskoy eruption.