Alert! Mount Semeru Erupts Again This Afternoon (Monday, February 9, 2026)

Mount Semeru in East Java erupted again on Monday (February 9, 2026) at 11:18 WIB. In the past week, Mount Semeru has erupted 6 times.

Quoting eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the ash column observed is about 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: 10 Peat Hydrological Areas Most Vulnerable to Forest and Land Fires in 2023)

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 avalanche 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 any activities in the southeast sector along Besuk Kobokan, within 13 kilometers of the peak (eruption center). Beyond that distance, residents should not 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 529 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 273 times.

(Read: Due to Forest and Land Fires, ARI Cases in South Kalimantan Reach 189 Thousand as of September 2023)