Alert! Mount Semeru Erupts Again Early This Morning (Wednesday, February 25, 2026)

Mount Semeru in East Java erupted again on Wednesday (February 25, 2026) at 02:41 WIB. In the past week, Mount Semeru has erupted 15 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 150 seconds.

(Read: 5.5 M Earthquake Shakes 262 Km East of Levuka,)

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level III (Alert). Seismic observations on February 25, 2026, from 18:00 to 23:59 WIB showed 24 eruption/explosion earthquakes with amplitudes of 10-22 millimeters and durations of 72-130 seconds.

Additionally, there were 3 collapse earthquakes with amplitudes of 2-7 mm and durations of 40-69 seconds, as well as 2 emission earthquakes with amplitudes of 5-7 millimeters and durations of 58-62 seconds.

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

Throughout 2026, MAGMA Indonesia has recorded 761 volcanic eruptions across Indonesia. Mount Semeru in East Java has the highest number of eruptions with 399 events.

(Read: 4.7 M Earthquake Shakes the Bonin Islands Region)