Ubinas, Peru

Based on Significant Meteorological Information (SIGMET) advisories and 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 N and NE during 4-7 and 10 December.

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.”