Mount Semeru Erupts Again This Afternoon (Tuesday, February 3, 2026)

Mount Semeru in East Java erupted again on Tuesday (February 3, 2026) at 4:15 PM WIB. In the last week, Mount Semeru has erupted 13 times.

According to 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 (None meters above sea level).

The visual eruption was not observed. The eruption of Mount Semeru was still ongoing when this report was made.

(Read: Indonesia Has the Most Active Volcanoes in the World)

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Alert). Seismicity observations on February 3, 2026, at 06:00-12:00 WIB showed 17 eruption earthquakes with amplitudes of 10-22 millimeters and earthquake durations of 74-124 seconds.

Then, 2 rockfall earthquakes with amplitudes of 5-10 mm and durations of 53-93 seconds, and 6 exhalation earthquakes with amplitudes of 6 millimeters and durations of 74-98 seconds occurred.

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 conduct activities within 500 meters from the riverbanks (river boundaries) along Besuk Kobokan due to the potential for hot clouds and lava flows to extend up to 17 kilometers from the peak.

Throughout 2026, MAGMA Indonesia has recorded 450 volcanic eruptions across Indonesia. Mount Semeru in East Java has erupted the most with 237 occurrences.

(Read: Volcanic Eruption Trends in Recent Years)