Mount Semeru Erupts Again Tonight (Wednesday, February 19, 2025)

Mount Semeru in East Java erupted again on Wednesday, February 19, 2025, at 10:00 PM WIB. In the last week, Mount Semeru has erupted 61 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height reached 500 meters above the peak or 4,176 meters above sea level.

The ash column was observed to be white to gray with thick intensity towards the southeast and south. The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 125 seconds.

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level II (Alert). Observations of seismic activity on February 19, 2025, from 00:00 to 23:59 WIB, showed 56 eruption quakes with amplitudes of 11-23 millimeters and durations of 50-190 seconds.

Furthermore, there were 4 rockfall quakes with an amplitude of 4 mm and a duration of 26 seconds, and 11 emission quakes with amplitudes of 3-8 millimeters and durations of 34-75 seconds.

PVMBG advises against any activity in the southeast sector along Besuk Kobokan, up to 8 kilometers from the peak (eruption center). Outside this distance, people should not engage in activities within 500 meters of the riverbank (river boundary) along Besuk Kobokan due to the potential for pyroclastic flow and lahar flows extending up to 13 kilometers from the peak.

During 2025, MAGMA Indonesia has recorded 1,409 volcanic eruptions/eruptions throughout Indonesia. Mount Semeru in East Java has experienced the most eruptions, with 699 recorded.