Alert! Mount Semeru Erupts Again Tonight (Sunday, February 15, 2026)

Mount Semeru in East Java erupted again on Sunday (February 15, 2026) at 6:13 PM WIB. In the past week, Mount Semeru has erupted 50 times.

Quoting 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).

Eruption visuals were not observed. The eruption of Mount Semeru was still ongoing when this report was made.

(Read: Floods, the Natural Disaster That Struck Indonesia the Most as of September 2025)

According to the MAGMA Indonesia volcanic activity report, Mount Semeru's activity level is at Level III (Alert). Earthquake observations on February 15, 2026 from 12:00 PM to 6:00 PM WIB showed 20 eruption/explosion earthquakes with amplitudes of 8-22 millimeters and durations of 72-124 seconds.

Additionally, there were 2 collapse earthquakes with amplitudes of 2-3 mm and durations of 43-56 seconds, as well as 5 emission earthquakes with amplitudes of 2-6 millimeters and durations of 38-66 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 conduct activities within 500 meters of the riverbanks along the Besuk Kobokan due to the potential for being affected by expanding hot clouds and lahar flows up to 17 kilometers from the peak.

In 2026, MAGMA Indonesia has recorded 611 volcanic eruptions across Indonesia. Mount Semeru in East Java had the highest number of eruptions with 317 events.

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