Mount Semeru Erupts Again Tonight (Monday, March 2, 2026)

Mount Semeru in East Java erupted again on Monday (March 2, 2026) at 21:08 WIB. In the last week, Mount Semeru erupted only once.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height is around 400 meters above the peak (4,076 meters above sea level).

The ash column was observed to be white to gray with thick intensity towards the northeast. The eruption was recorded on the seismograph with a maximum amplitude of 22 millimeters and a duration of 110 seconds.

(Read: Countries with the Most Active Volcanoes in the World, Indonesia Ranks First)

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Alert). Volcanic earthquake observations on March 2, 2026 from 12:00-18:00 WIB showed 17 eruption/explosion earthquakes with amplitudes of 10-22 millimeters and earthquake durations of 65-160 seconds. Then, 2 emission earthquakes with amplitudes of 6-8 millimeters and earthquake durations of 37-74 seconds.

PVMBG advises against any activities in the southeast sector along the Besuk Kobokan, within 13 kilometers of the peak (eruption center). Outside this 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 lahar flows up to 17 kilometers from the peak.

Throughout 2026, MAGMA Indonesia has recorded 816 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 416 events.

(Read: Trends in Volcanic Eruptions in Recent Years)