RVO reported that ash plumes from Rabaul caldera’s Tavurvur cone rose to altitudes of 2.7-3.2 km (8,900-10,500 ft) a.s.l. and drifted N, NW, W, SW, and S during 12-19 March. Ashfall was reported in areas downwind, including Rabaul Town (3-5 km NW) and Matupit Island (2 km W). Incandescence at the summit was observed and roaring noises were occasionally heard.
Source: Herman Patia, Rabaul Volcano Observatory – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”