SERNAGEOMIN reported that during 23-26 June, visual observations of Chaitén were inhibited due to inclement weather. Based on web camera views, SIGMET reports, observations of satellite imagery, pilot reports, and information from the Puerto Montt Flight Information Region (FIR), the Buenos Aires VAAC reported continuous ash emissions on 25 June. They further reported ash plumes at altitudes of 0.6-4.6 km (2,000-15,000 ft) a.s.l. during 30 June-1 July. Ash plumes drifted NE and NNW on 30 June, and NNE on 1 July.
Sources: Servicio Nacional de Geología y Minería (SERNAGEOMIN), 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.”