Mount Semeru Erupts Again This Morning (Monday, February 9, 2026)

Mount Semeru in East Java erupted again on Monday (February 9, 2026) at 09:15 WIB. In the past week, Mount Semeru has erupted 4 times.

Quoting eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the observed ash column reached None meters above the peak or None meters above sea level.

Eruption visuals were not observed. The eruption of Mount Semeru was still ongoing when this report was made.

(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). Earthquake observations on February 9, 2026 from 00:00-06:00 WIB showed 30 eruption/explosion earthquakes with an amplitude of 12-22 millimeters and a duration of 85-183 seconds.

Then, 9 collapse earthquakes with an amplitude of 2-15 mm and a duration of 55-110 seconds, as well as 1 emission earthquake with an amplitude of 4 millimeters and a duration of 75 seconds.

PVMBG advises against carrying out any activities in the southeast sector along Besuk Kobokan, up to 13 kilometers from the peak (eruption center). Outside this distance, residents are advised not to carry out activities within 500 meters of the riverbank along 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.

Throughout 2026, MAGMA Indonesia has recorded 527 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 271 events.

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