Overview

• The Krasheninnikov volcano, inactive for roughly 450 years, has sustained eruptions since early August with ash plumes reaching 6,000 meters and an orange-level aviation hazard in effect.
• A magnitude 6.8 aftershock struck on August 3 as part of a sequence of dozens of tremors following the July 30 magnitude 8.8 subduction-zone quake.
• No major casualties have been reported and tsunami alerts issued across Pacific Rim countries were lifted after only moderate sea surges and precautionary evacuations.
• Kliuchevskoi, Eurasia’s tallest active volcano, has continued to emit ash and incandescent material since erupting immediately after the main quake.
• Russian and international agencies including USGS, SGU and the Ministry of Emergency Situations are using real-time seismic, satellite and ash-tracking data to refine early-warning systems and public safety protocols.