Alert! Mount Semeru Erupts Again Tonight (Friday, February 6, 2026)

Mount Semeru in East Java erupted again on Friday (February 6, 2026) at 00:44 WIB. In the past week, Mount Semeru has erupted 38 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height reached 400 meters above the peak or 4,076 meters above sea level.

The observed ash column was white to gray in color with moderate intensity towards the south. The eruption of Mount Semeru was still ongoing when this report was made.

(Read: Due to Forest Fires, Acute Respiratory Infections in South Kalimantan Reach 189 Thousand Cases as of September 2023)

According to the MAGMA Indonesia volcanic activity report, the activity level of Mount Semeru is at Level III (Alert). Earthquake observations on February 6, 2026 from 18:00 to 23:59 WIB showed 27 eruption/explosion earthquakes with amplitudes of 11-22 millimeters and durations of 60-169 seconds.

Then, 5 collapse earthquakes with amplitudes of 4-6 mm and durations of 35-83 seconds, as well as 2 harmonic earthquakes with amplitudes of 11-20 millimeters and durations of 109-117 seconds.

PVMBG advises against any activities in the southeast sector along the 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 the 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 495 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 262 events.

(Read: 10 Peat Hydrological Areas Most Vulnerable to Forest Fires in 2023)