Warning! Mount Semeru Erupts Again Tonight (Thursday, March 5, 2026)

Mount Semeru in East Java erupted again on Thursday (March 5, 2026) at 7:00 PM WIB. In the past week, Mount Semeru has erupted 8 times.

Citing 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 of Mount Semeru is still ongoing when this report was made.

(Read: West Kalimantan Produces the Most CO2 Emissions from Forest Fires until July 2023)

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Alert). Earthquake observations on March 5, 2026 from 12:00 PM to 6:00 PM WIB showed 12 eruption/explosion earthquakes with amplitudes of 10-22 millimeters and durations of 68-118 seconds.

Then, 4 emission earthquakes with amplitudes of 4-6 millimeters and durations of 58-64 seconds, as well as 1 flood vibration earthquake with an amplitude of 20 millimeters and a duration of 3180 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 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.

During 2026, MAGMA Indonesia has recorded 845 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 423 events.

(Read: Indication of Forest Fire Area in East Kalimantan until June 2025)