Roundup of Global Volcanic Activity – New Activity for the Week 26 August 2020 – 1 September 2020
Langila | New Britain (Papua New Guinea) : Based on analyses of satellite imagery and wind-model data, the Darwin VAAC reported that on 22 August an ash plume from Langila rose to an altitude of 1.8 km (6,000 ft) a.s.l. and drifted NW.
Manam | Papua New Guinea : The Darwin VAAC reported that on 20 August an ash plume from Manam rose 2.1 km (7,000 ft) a.s.l. and drifted W and WSW, based on satellite data and a ground-based observer. On 31 August an ash plume rose to 4.6 km (15,000 ft) a.s.l. and drifted W.
Raung | Eastern Java (Indonesia) : PVMBG reported that on 21 August white-and-brown emissions rose 100 m above Raung’s summit and drifted N and S. White plumes rose as high as 100 m during 22-26 August; weather conditions prevented visual observations during 27-31 August. 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.
Sinabung | Indonesia : PVMBG reported that white-and-gray plumes rose as high as 2 km above Sinabung’s summit and drifted in multiple directions during 18-20, 23-25, and 31 August. An eruptive event was recorded at 0517, though weather conditions prevented visual confirmation. White plumes were seen rising 100-400 m during 22 and 26-30 August. Notably, at 1823 on 19 August an ash plume rose 4 km above the crater rim and drifted ESE. At 0741 on 23 August a gray ash plume rose 1.5 km and drifted E; pyroclastic flows traveled about 1 km down the E and SE flanks. The Alert Level remained at 3 (on a scale of 1-4), with a general exclusion zone of 3 km and extensions to 5 km on the SE sector and 4 km in the NE sector.