Ubinas, Peru

Based on pilot reports, the Buenos Aires VAAC reported that ash plumes from Ubinas rose to altitudes of 5.5-8.5 km (18,000-28,000 ft) a.s.l. and drifted SE on 23 February.

Source: Buenos Aires Volcanic Ash Advisory Center (VAAC) - “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”