Warning! Mount Semeru Erupts Again Tonight (Friday, February 27, 2026)

Mount Semeru in East Java erupted again on Friday (February 27, 2026) at 18:44 WIB. In the past week, Mount Semeru has erupted 24 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 was observed to be around None meters above the peak or None meters above sea level.

No eruption visuals were observed. The eruption of Mount Semeru was still ongoing when this report was made.

(Read: Floods Dominate Natural Disasters in Indonesia at the End of February 2024)

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Alert). Seismic observations on February 27, 2026 from 12:00-18:00 WIB showed 15 eruption/explosion earthquakes with an amplitude of 11-22 millimeters and a duration of 73-127 seconds.

Then, 1 avalanche earthquake with an amplitude of 2 mm and a duration of 29 seconds, as well as 4 emission earthquakes with an amplitude of 2-8 millimeters and a duration of 38-54 seconds.

PVMBG advises against any activities in the southeast sector along 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 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.

In 2026, MAGMA Indonesia has recorded 787 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions with 408 events.

(Read: Hundreds of Natural Disasters Occurred Until Early April 2024, Floods Were the Most Common)