Based on satellite imagery, the Darwin VAAC reported that ash-and-steam plumes from Ulawun drifted SW and S on 30 August and 2 September, respectively.

According to the Darwin VAAC, an ash-and-steam plume from Ulawun that was reported on 15 August by the US Air Force Weather Agency rose to an altitude of ~3.7 km (~12,000 ft.) a.s.l. The plume was also visible on satellite imagery.

Another notorious volcano in New Britain, Ulawun, had a (small) eruption on March 1st. Pilots reported ash to about 2 km above sea level.