Updated

The Smithsonian/USGS Weekly Volcanic Activity report for September 10-16, 2026, detailed continuing or new eruptive activity at multiple volcanoes worldwide. Krakatau (Indonesia) saw new Strombolian eruptions and an ash plume reaching 2.1 km; Aira/Sakurajima (Japan) had ongoing ash emissions and high sulfur dioxide output; Dukono, Ibu, Lewotolok and Karangetang (Indonesia) all continued regular ash plume activity at Alert Level 2; Kanlaon and Mayon (Philippines) recorded frequent volcanic earthquakes and ash emissions; Great Sitkin (USA) continued slow lava effusion; Kilauea (USA) maintained episodic lava fountaining; and Klyuchevskoy and Krasheninnikov (Russia) showed thermal anomalies and ongoing lava flows. None of the reports indicated casualties, and most volcanoes remain at low-to-moderate alert levels, though local exclusion zones remain in place around active craters.