Mount Semeru in Java Erupts With 1,000-Meter Ash Column, Alert Level Maintained

Mount Semeru (3,676 m), located on the border between Lumajang and Malang regencies in East Java, erupted at approximately 7:51 a.m. local time (WIB) on Sunday. According to an officer at the Semeru volcano observation post, the eruption produced an ash column reaching about 1,000 meters above the summit, or roughly 4,676 meters above sea level. The ash was described as white to gray in color, drifting thickly toward the east. Seismographs recorded the eruption with a maximum amplitude of 23 mm and a duration of 102 seconds.

The volcano's activity level remains at Level III (Siaga/Alert), the third of four levels used by Indonesian volcanic authorities. Officials have advised residents and hikers to avoid outdoor activity, particularly within a 13 km radius southeast of the crater along the Besuk Kobokan river, which is the center of eruptive activity.

Mount Semeru is located in East Java, separate from Bali island. There are no reports of this eruption directly affecting Bali's tourism or transportation infrastructure. However, travelers planning to visit East Java, including areas near Malang or Bromo Tengger Semeru National Park, should monitor updated volcanic activity information.