Indonesia’s Center for Volcanology and Geological Hazard Mitigation (PVMBG) raised the alert level for Lewotobi Laki-laki in East Flores, East Nusa Tenggara, from Level II to Level III at 13:00 WITA (05:00 UTC) on May 12, 2026. The decision followed increased deep volcanic earthquakes, persistent non-harmonic tremor, inflation, and surface activity from May 1 to 11. Residents and tourists were…

An explosive eruption occurred at Semeru volcano in East Java, Indonesia, at 08:49 LT (01:49 UTC) on March 29, 2026, producing an ash plume rising 800 m (2 625 feet) above the summit and a pyroclastic density current traveling 3.5 km (2.2 miles) toward the Besuk Kobokan drainage.

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Heavy rainfall on March 3, 2026, triggered a destructive volcanic mudflow on Mount Merapi’s Kali Senowo channel in Magelang Regency, Central Java, Indonesia, sweeping away at least three trucks and one car.

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Multiple eruptions at Mount Semeru in East Java, Indonesia, on February 13 and 14, 2026, produced pyroclastic flows up to 6 km (3.7 miles) down the volcano’s southeastern flank and ash plumes up to 2 000 m (6 500 feet) above the crater. PVMBG maintains a 13 km (8 miles) exclusion zone in the southeastern sector.

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