Ibu (Indonesia) - Report for 4 September-10 September 2019

PVMBG reported that at 0936 on 4 September a gray ash plume from Ibu rose at least 300 m above the summit and drifted S.
The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to stay at least 2 km away from the active crater, and 3.5 km away on the N side.

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