Mount Semeru Erupts Again Tonight (Friday, February 20, 2026)

Mount Semeru in East Java erupted again on Friday (February 20, 2026) at 10:19 PM WIB. In the last week, Mount Semeru has erupted 55 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the ash column observed is around None meters above the peak or 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 136 seconds.

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According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Alert). Earthquake observations on February 20, 2026 from 12:00 PM to 6:00 PM WIB showed 22 eruption/explosion earthquakes with amplitudes of 10-22 millimeters and earthquake durations of 67-153 seconds.

Then, 1 avalanche earthquake with an amplitude of 5 mm and a duration of 153 seconds, as well as 1 emission earthquake with an amplitude of 5 millimeters and a duration of 88 seconds.

PVMBG advises against any activities in the southeast sector along the Besuk Kobokan, up to 13 kilometers from the peak (eruption center). Outside this distance, residents should not carry out activities within 500 meters of the riverbank along the Besuk Kobokan due to the potential for being affected by the expansion of hot clouds and lava flows up to 17 kilometers from the peak.

Throughout 2026, MAGMA Indonesia has recorded 702 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 375 eruptions.

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