PVMBG reported that diffuse white plumes rose 20-60 m above Gamkonora’s summit were visible during 1 January-29 June, and no other changes were observed. Deep and shallow volcanic earthquakes were rarely recorded. On 30 June the Alert Level was lowered to 1 (on a scale of 1-4). Residents and tourists were asked not to venture near the crater within a radius of 1 km.

Geological Summary. The shifting of eruption centers on Gamkonora, the highest peak of Halmahera, has produced an elongated series of summit craters along a N-S trending rift. Youthful-looking lava flows originate near the cones of Gunung Alon and Popolojo, south of Gamkonora. Since its first recorded eruption in the 16th century, typical activity has been small-to-moderate explosive eruptions. Its largest recorded eruption, in 1673, was accompanied by tsunamis that inundated villages.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)