RVO reported that during 1-7 July, ash-and-steam plumes from Rabaul caldera’s Tavurvur cone rose to altitudes up to 1.7 km (5,600 ft) a.s.l. and drifted W and NW. Ashfall was reported downwind in Rabaul town, Namanula Hill, Malaguna, and surrounding areas, and was heavy during 2-3 July. Incandescence at the summit was noted at night during 1-2 July; plumes blocked views of the summit during 3-7 July. During 4-7 July, roaring noises were reported. Based on observations of satellite imagery, the Darwin VAAC reported that on 8 July an ash plume rose to an altitude of 1.8 km (6,000 ft) a.s.l. and drifted NW.
Sources: Herman Patia, Rabaul Volcano Observatory (RVO), Darwin Volcanic Ash Advisory Center (VAAC) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”