Warning! This Morning Mount Semeru Erupts Again (Wednesday, January 7, 2026)

Mount Semeru in East Java erupted again on Wednesday (January 7, 2026) at 09:37 AM WIB. In the last week, Mount Semeru has erupted 19 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 was observed to be around None meters above the peak or None meters above sea level.

The visual eruption was not observed. The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 105 seconds.

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According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Siaga/Alert). Seismicity observations on January 7, 2026, from 00:00-06:00 AM WIB, showed 38 eruption/explosion earthquakes with amplitudes of 12-22 millimeters and durations of 89-122 seconds.

Subsequently, there were 3 rockfall earthquakes with amplitudes of 3-7 mm and durations of 41-68 seconds, and 2 gas emission earthquakes with amplitudes of 4-7 millimeters and durations of 20-54 seconds.

PVMBG advises against any activity in the southeast sector along Besuk Kobokan, as far as 13 kilometers from the peak (eruption center). Beyond this distance, the public should not engage in activities within 500 meters of the riverbanks (river boundaries) along Besuk Kobokan, as there is a potential for expansion of hot clouds and lava flows up to 17 kilometers from the peak.

Throughout 2026, MAGMA Indonesia has recorded 96 volcanic eruptions across Indonesia. Mount Semeru in East Java has erupted the most, with 56 occurrences.

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