Mount Semeru eruption sparks potential lava flow flooding

Volcanic smoke rises from Mount Semeru’s crater as seen from Supiturang Village, Lumajang, East Java, Wednesday (Feb. 25, 2026). According to the Center for Volcanology and Geological Hazard Mitigation (PVMBG), the eruption produces an ash column 400-600 meters above the summit, and residents are urged to remain alert to potential lava flow flooding due to ongoing heavy rainfall. ANTARA FOTO/Irfan Sumanjaya/tom/M052

Volcanic smoke rises from Mount Semeru’s crater as seen from Supiturang Village, Lumajang, East Java, Wednesday (Feb. 25, 2026). According to the Center for Volcanology and Geological Hazard Mitigation (PVMBG), the eruption produces an ash column 400-600 meters above the summit, and residents are urged to remain alert to potential lava flow flooding due to ongoing heavy rainfall. ANTARA FOTO/Irfan Sumanjaya/tom/M052

A motorcyclist rides past volcanic smoke rising from Mount Semeru’s crater as seen from Supiturang Village, Lumajang, East Java, Wednesday (Feb. 25, 2026). The Center for Volcanology and Geological Hazard Mitigation (PVMBG) reports that the eruption produces an ash column 400-600 meters above the summit, and residents are urged to remain alert to potential lava flow flooding due to ongoing heavy rainfall. ANTARA FOTO/Irfan Sumanjaya/foc/M052