Updated

The Smithsonian/USGS Weekly Volcanic Activity Report for September 10-16, 2026 detailed ongoing eruptive activity at multiple volcanoes worldwide, including new Strombolian eruptions at Krakatau (Indonesia), continuing activity at Aira/Sakurajima (Japan), Dukono, Ibu, Karangetang and Lewotolok (Indonesia), Kanlaon and Mayon (Philippines), Great Sitkin and Kilauea (United States), and Klyuchevskoy and Krasheninnikov (Russia). Activity included ash plumes, lava flows, elevated sulfur dioxide emissions, and minor seismicity, with alert levels generally remaining at low-to-moderate levels and no reported casualties.