Alert! Mount Semeru Erupts Again This Afternoon (Thursday, February 19, 2026)

Mount Semeru in East Java erupted again on Thursday (February 19, 2026) at 4:00 PM WIB. In the past week, Mount Semeru has erupted 40 times.

Based on 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 approximately None meters above the peak (None meters above sea level).

No eruption visuals were observed. The eruption was recorded on the seismograph with a maximum amplitude of 22 millimeters and a duration of 110 seconds.

(Read: Number of Slightly Damaged Houses Due to Natural Disasters in Indonesia 2015-2024)

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Alert). Earthquake observations on February 19, 2026 from 6:00 AM to 12:00 PM WIB showed 21 eruption/explosion earthquakes with amplitudes of 11-22 millimeters and durations of 63-120 seconds. Then, 2 emission earthquakes with amplitudes of 3-4 millimeters and durations of 38-42 seconds.

PVMBG advises against any activities in the southeast sector along Besuk Kobokan, up to 13 kilometers from the peak (eruption center). Beyond that 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 expanding hot clouds and lava flows up to 17 kilometers from the peak.

Throughout 2026, MAGMA Indonesia has recorded 678 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 360 events.

(Read: Once Surged, Number of Natural Disaster Events in Indonesia Decreased in 2024)