Based on analysis of satellite imagery and reports from RVO, the Darwin VAAC reported that during 13-19 August, low-level plumes from Rabaul caldera’s Tavurvur cone rose to altitudes of 1.5-2.4 km (5,000-8,000 ft) a.s.l. and drifted WNW and NW. During 16-18 August, RVO reported ashfall in areas downwind. Occasionally incandescence at the summit was observed and roaring noises were heard. Explosions also ejected incandescent lava fragments.
Sources: Ima Itikarai, Rabaul Volcano Observatory (RVO), Darwin Volcanic Ash Advisory Centre (VAAC) – – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”