Expect exclusion zones near Mount Semeru in East Java, Indonesia over the coming days amid eruptions; anticipate residual travel disruptions.
Level 4 alert at Mount Semeru after at least three eruptions were recorded on November 19, prompting the evacuation of around 1,000 nearby residents and climbers. Public activity is banned within 8 km of the crater and more than 20 km along the Besuk Kobokan corridor, with reports of several injuries and damage to a school building. Avalanches, earthquakes, further eruptions, ash fall, and lahars that could affect nearby roads, communities, and regional flights are expected.









