Mount Semeru Erupts Again Tonight (Thursday, March 26, 2026)

Mount Semeru in East Java erupted again on Thursday (March 26, 2026) at 9:37 PM WIB. In the past week, Mount Semeru has erupted 18 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).

No eruption visuals were observed. The eruption was recorded on the seismograph with a maximum amplitude of 22 millimeters and a duration of 155 seconds.

(Read: 5.3 M Earthquake Shakes 17 Km West of Pasuquin,)

According to the MAGMA Indonesia volcano activity report, Mount Semeru's activity level is at Level III (Alert). Seismic observations on March 26, 2026 from 12:00 PM to 6:00 PM WIB showed 17 eruption/explosion earthquakes with amplitudes of 15-22 millimeters and durations of 87-214 seconds. Then, 2 distant tectonic earthquakes with an amplitude of 15 millimeters, s-p time of 31-93 seconds and durations of 84-195 seconds.

PVMBG advises against any activities in the southeast sector along the Besuk Kobokan, up to 13 kilometers from the peak (eruption center). Beyond that distance, residents are advised not to 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.

In 2026, MAGMA Indonesia has recorded 1,153 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 623 events.

(Read: 4.6 M Earthquake Shakes 128 Km North of Lae, Papua)