Bagana volcano (Bougainville, Papua New Guinea) - Smithsonian / USGS Weekly Volcanic Activity Report for 29 March-4 April 2017 (Continuing Activity)

Based on analyses of satellite imagery and model data, the Darwin VAAC reported that on 29 March an ash plume from Bagana rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted SW. On 31 March a NOTAM (notice to airmen) and pilot report suggested that an ash plume rose to an altitude of 2.1 km though ash was not identified in mostly clear satellite images.
An ash plume observed on 2 April rose to an altitude of 2.1 km and drifted almost 40 km E.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)
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From: Global Volcanism Program, 2017. Report on Bagana. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 29 March-4 April 2017. Smithsonian Institution and US Geological Survey.