Puyehue-Cordon Caulle volcano (Chile) - Smithsonian / USGS Weekly Volcanic Activity Report for 14 September-20 September 2011 (Continuing Activity)

Based on seismicity during 14-16 and 18-20 September, OVDAS-SERNAGEOMIN reported that the eruption from the Cordón Caulle rift zone, part of the Puyehue-Cordón Caulle volcanic complex, continued at a low level. Although cloudy weather mostly prevented observations of the vent, a plume was observed in satellite imagery drifting 60 km E on 14 September, and the next day, a plume observed by an area camera rose 4 km above the crater and drifted SE. Plumes observed in satellite imagery drifted 40-70 km N and NW during 18-20 September.
Plumes observed during 19-20 September by an area camera rose 3-4 km above the crater. According to a news article, on 17 September the first commercial plane landed at the airport in Bariloche, about 60 km SE, since the airport had closed on 4 June. Private planes had been occasionally using the airport since mid-July.
The Alert Level remained at Red.

Sources: Servicio Nacional de Geología y Minería (SERNAGEOMIN), Agence France-Presse (AFP)
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From: Global Volcanism Program, 2011. Report on Puyehue-Cordon Caulle. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 14 September-20 September 2011. Smithsonian Institution and US Geological Survey.