Warning! Mount Semeru Erupts Again This Afternoon (Tuesday, February 24, 2026)

Mount Semeru in East Java erupted again on Tuesday (February 24, 2026) at 5:36 PM WIB. In the past week, Mount Semeru has erupted 14 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 3,000 meters above the peak (6,676 meters above sea level).

The ash column was observed to be gray to brown in color with thick intensity towards the southeast. The eruption of Mount Semeru was still ongoing when this report was made.

(Read: 295 People Killed by Floods and Landslides in North Sumatra, Here's the Distribution (December 4, 2025))

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Alert). Earthquake observations on February 24, 2026 from 6:00 AM to 12:00 PM WIB showed 22 eruption/explosion earthquakes with amplitudes of 15-22 millimeters and durations of 60-131 seconds.

Then, 3 avalanche earthquakes with amplitudes of 2-5 mm and durations of 25-63 seconds, as well as 1 emission earthquake with an amplitude of 5 millimeters and a duration of 57 seconds.

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

In 2026, MAGMA Indonesia has recorded 758 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 398 events.

(Read: Provinces in Indonesia Most Frequently Hit by Floods Until End of 2025)