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Indonesian volcanoes Semeru, Ile Lewotolok, and Merapi report increased activity
Multiple volcanoes in Indonesia have shown increased activity. Gunung Semeru in East Java erupted on September 6, 2026, with an ash column reaching 1,000 meters above the peak. The eruption, recorded with a maximum seismograph amplitude of 23 mm and lasting 102 seconds, has placed the volcano at Level III (Siaga) status. Authorities have prohibited activities within a 5 km radius of the peak and along the Besuk Kobokan sector up to 13 km from the summit due to risks of hot clouds and lava flows.
In East Nusa Tenggara, Gunung Ile Lewotolok experienced two eruptions on the morning of September 7, 2026, with ash columns reaching 600 meters. The volcano is currently at Level II (Waspada) status, and a 2 km exclusion zone is in effect.
Additionally, Gunung Merapi has recorded 14 lava flows toward the southwest, with a maximum distance of 2,000 meters. It remains at Level III (Siaga) status. The East Java Disaster Management Agency (BPBD) has confirmed that logistics supplies for affected residents are secure and being monitored.
Entities
BPBD Jawa Timur · Gunung Ile Lewotolok · Gunung Merapi · Gunung Semeru · Lumajang · Malang · Mount Semeru · PVMBG · Sigit Rian Alfian
Claims
What the coverage asserts, and how many sources carry each claim.
- [○ 1 SOURCE] The ash column from Ile Lewotolok reached approximately 600 meters above the peak.
- [○ 1 SOURCE] Gunung Ile Lewotolok in East Nusa Tenggara experienced two eruptions on the morning of September 7, 2026.
- [○ 1 SOURCE] Gunung Merapi recorded 14 lava flows toward the southwest, reaching a maximum distance of 2,000 meters. jogja.jpnn.com
- [● 9 SOURCES] Gunung Semeru is at Level III (Siaga) volcanic activity status. www.suarasurabaya.net · jatim.jpnn.com · prokalteng.jawapos.com · news.okezone.com · www.antaranews.com · +4 more
- [DISPUTED] Gunung Semeru erupted at 07:51 WIB on September 6, 2026, with an ash column reaching 1,000 meters above the peak. www.suarasurabaya.net · jatim.jpnn.com · prokalteng.jawapos.com · news.okezone.com · www.antaranews.com · +4 more
- [DISPUTED] The Semeru eruption recorded a maximum seismograph amplitude of 23 mm and lasted 102 seconds. www.suarasurabaya.net · jatim.jpnn.com · prokalteng.jawapos.com · news.okezone.com · www.antaranews.com · +4 more
- [● 9 SOURCES] Authorities have prohibited activities in the southeast sector along Besuk Kobokan up to 13 km from the peak. www.suarasurabaya.net · jatim.jpnn.com · prokalteng.jawapos.com · news.okezone.com · www.antaranews.com · +4 more
- [○ 1 SOURCE] The East Java Disaster Management Agency (BPBD) has ensured that logistics supplies for residents affected by volcanic activity are secure. malang-post.com