Updated

The Smithsonian/USGS Weekly Volcanic Activity Report for 10-16 September 2026 documented continuing eruptive activity at numerous volcanoes worldwide, including new eruptive activity at Krakatau (Indonesia) with Strombolian eruptions and an ash plume rising 2.1km; ongoing unrest at Aira/Sakurajima (Japan) with high sulfur dioxide emissions; continuing ash emissions at Dukono, Ibu, Karangetang and Lewotolok (Indonesia); Kanlaon and Mayon (Philippines); Great Sitkin and Kilauea (United States); and Klyuchevskoy and Krasheninnikov (Russia), where lava flows and thermal anomalies persisted. Most sites remained at low-to-moderate alert levels (2 on a four-level scale) with public advisories to stay several kilometers from active craters. No deaths, injuries or major evacuations were reported at any of the volcanoes during this reporting period.