Based on PVMBG observations, webcam and satellite images, and wind data, the Darwin VAAC reported that during 17-20 and 24 May ash plumes from Sinabung rose 4.3-8.8 km (14,000-29,000 ft) a.s.l.
and drifted in multiple directions.
BNPB reported a high-intensity eruption at the volcano on 20 May.
An ash plume rose 4 km and drifted SE.
There were 2,038 families (7,214 people) displaced to eight shelters, and an additional 2,863 people living in refugee camps.
The Alert Level remained at 4 (on a scale of 1-4), with an exclusion zone of 7 km from the volcano on the SSE sector, and 6 km in the ESE sector, and 4 km in the NNE sector.
Sources: Badan Nacional Penanggulangan Bencana (BNPB) ,Darwin Volcanic Ash Advisory Centre (VAAC)