Mount Semeru Erupts Again Tonight (Friday, March 27, 2026)

Mount Semeru in East Java erupted again on Friday (March 27, 2026) at 9:17 PM WIB. In the past week, Mount Semeru has erupted 24 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 500 meters above the peak or 4,176 meters above sea level.

The observed ash column was white to gray in color with moderate intensity heading north. The eruption of Mount Semeru was still ongoing when this report was made.

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According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Alert). Seismic observations on March 27, 2026 from 12:00 PM to 6:00 PM WIB showed 12 eruption/explosion earthquakes with amplitudes of 10-22 millimeters and durations of 59-136 seconds.

Additionally, there was 1 collapse earthquake with an amplitude of 12 mm and duration of 141 seconds, as well as 3 emission earthquakes with amplitudes of 2-7 millimeters and durations of 43-69 seconds.

PVMBG advises against any activities in the southeast sector along the 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 riverbank along the Besuk Kobokan due to the potential for being affected by expanding hot clouds and lava flows up to 17 kilometers from the peak.

Throughout 2026, MAGMA Indonesia has recorded 1,162 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions with 629 events.

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