Mount Semeru Erupts Again, Ash Column Reaches 1.3 Kilometers

Mount Semeru, a volcano located on the border of Lumajang and Malang Regencies in East Java, Indonesia, erupted again on Sunday, September 27, 2026, sending an ash column 1,300 meters above the peak. The eruption, which began at 05:55 WIB, was recorded on the seismograph with a maximum amplitude of 22 mm and lasted for approximately 2 minutes and 20 seconds.

According to Liswanto, an officer at the Mount Semeru Observation Post, the ash column appeared white to gray with moderate intensity and was drifting toward the northeast. The eruption is currently at Alert Level III, and the public is advised to avoid activities within a 5-kilometer radius of the volcano's crater or peak due to the potential dangers of hot cloud surges, lava avalanches, and lahar flows.

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