PVMBG reported that daily gray-and-white ash plumes rose 50-600 m above Raung's summit during 6-13 April and drifted mainly N, E, and S.
The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km exclusion zone.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)