Mount Semeru Erupted on Sunday Afternoon, Activity Level at Alert Level

Mount Semeru in East Java erupted again on Sunday (February 15, 2026) at 15:54 WIB. In the last week, Mount Semeru has erupted 49 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height reached None meters above the peak (None meters above sea level).

No eruption visuals were observed. The eruption was recorded on the seismograph with a maximum amplitude of 22 millimeters and a duration of 116 seconds.

(Read: Number of Natural Disaster Victims in Indonesia as of July 8, 2025)

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level III (Alert). Seismic observations on February 15, 2026, from 06:00-12:00 WIB showed 25 eruption/explosion earthquakes with amplitudes of 8-23 millimeters and durations of 67-146 seconds.

Then, 1 avalanche earthquake with an amplitude of 3 mm and duration of 45 seconds, as well as 2 emission earthquakes with amplitudes of 4-6 millimeters and durations of 42-50 seconds.

PVMBG advises against any activity in the southeast sector along Besuk Kobokan, within 13 kilometers of the peak (eruption center). Beyond that distance, residents are advised not to carry out activities within 500 meters of the riverbanks along Besuk Kobokan due to the potential for being affected by expanding hot clouds and lahar flows up to 17 kilometers from the peak.

During 2026, MAGMA Indonesia has recorded 610 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 316 events.

(Read: Number of Natural Disaster Events in Java Island Provinces 2020-2024)