Warning! Mount Semeru Erupts Again This Afternoon (Friday, February 27, 2026)

Mount Semeru in East Java erupted again on Friday (February 27, 2026) at 4:33 PM WIB. In the past week, Mount Semeru has erupted 23 times.

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

No visual eruption was observed. The eruption was recorded on the seismograph with a maximum amplitude of 17 millimeters and a duration of 80 seconds.

(Read: Floods, Natural Disasters That Frequently Hit Indonesia as of September 2025)

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Alert). Seismic observations on February 27, 2026 from 6:00 AM to 12:00 PM WIB showed 25 eruption/explosion earthquakes with amplitudes of 10-22 millimeters and durations of 64-160 seconds.

Then, 1 collapse earthquake with an amplitude of 7 mm and duration of 46 seconds, as well as 3 distant tectonic earthquakes with amplitudes of 30-35 millimeters, s-p time of 13-14 seconds, and durations of 42-83 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 riverbanks along 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 786 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 407 events.

(Read: There Were 2,000 Natural Disasters in Indonesia in 2024, Floods Dominated)