Sinabung Volcano Erupts, Ash Column Reaches 3,500 Meters

Mount Sinabung in Indonesia erupted on Monday, August 31, 2026, producing an ash column that reached 3,500 meters above the summit, according to CNN Indonesia. The eruption was reported in the morning, with the volcano's activity level subsequently raised to Level III (Siaga), as stated by Indonesia's National Disaster Management Agency (BNPB).

The ash column height was confirmed by multiple outlets, including ANTARA News Bali, which also reported the 3,500-meter figure. CNN Indonesia noted that Sinabung was one of several Indonesian volcanoes that erupted on the same day, alongside Mount Semeru, though details on the other eruptions were not provided in the available reporting.

Following the eruption, the BNPB announced that Sinabung's status had been upgraded from its previous level to Level III, indicating a significant increase in volcanic activity. In response, the North Sumatra Regional Police (Polda Sumut) deployed 100 Brimob personnel and supporting equipment to the area, according to the official Indonesian National Police website.

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The eruption adds to a pattern of heightened volcanic activity in Indonesia, a country situated on the Pacific Ring of Fire with numerous active volcanoes. The BNPB's decision to raise the alert level suggests authorities are treating the situation with caution, though no evacuation orders or casualty figures have been reported in the material available.

Authorities are expected to continue monitoring Sinabung's activity closely, with the BNPB and police maintaining a presence in the region. Further updates on the volcano's status and any potential impact on nearby communities will depend on official announcements from Indonesian disaster management agencies.