The Krasheninnikov volcano on Russia's Kamchatka Peninsula erupted on the night of August 3, 2025, marking its first eruption in approximately 600 years. The eruption followed a powerful magnitude 8.8 earthquake that struck the region on July 30, 2025, which also triggered tsunami alerts in Japan, parts of the United States, and the Philippines. The volcanic eruption produced an ash plume reaching up to 6 kilometers in height. In the days following the earthquake, seismic activity intensified across Kamchatka, with seven volcanoes, including the Klyuchevskoy volcano—the highest active volcano in Eurasia—showing signs of activity. The Klyuchevskoy volcano erupted on August 4 and again on August 8, sending ash columns as high as 10.5 kilometers into the atmosphere. The earthquake caused the Kamchatka Peninsula to shift nearly 2 meters to the southeast. Volcanic ash from Klyuchevskoy's eruptions has impacted trans-Pacific flight corridors, prompting monitoring for potential flight cancellations and delays. Additionally, a 6.0-magnitude earthquake struck Russia's Kuril Islands on August 9, adding to the ongoing seismic unrest in the region.