PVMBG reported that during 13-19 January lava continued to effuse from Karangetang?s Main Crater (S), traveling as far as 1.8 km down the Nanitu, Pangi, and Sense drainages on the SW and W flanks.
Sometimes dense white plumes rose 50-300 m above the summit.
Incandescence from both summit craters was visible at night.
The Alert Level remained at 2 (on a scale of 1-4).
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)