Ulawun volcano (New Britain, Papua New Guinea) activity update: Major subplinian eruption- ash to at least 19km (63,000ft)

It is now clear that this is a major eruption, same as in 2000. VAAC reports have been revising the ash column height upwards and may continue to increase. Satellite imagery shows a large circular cloud over the volcano, indicating that this is most likely a full-scale subplinian eruption, the world’s first since Calbuco, Chile in 2015.