RVO reported that during 30 April-7 May ash plumes from multiple places inside Rabaul caldera’s Tavurvur cone rose to altitudes of 1.2-2.2 km (3,900-7,200 ft) a.s.l. and drifted N, E, and SE. Intermittent roaring and rumbling noises and occasional explosions were reported. Ashfall was reported in nearby areas. Ash in Rabaul Town (3-5 km NW) suspended by wind and traffic was problematic. During 5-7 May, incandescent tephra was occasionally visible at night.
Source: Steve Saunders and Herman Patia, Rabaul Volcano Observatory (RVO) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”