Lanin volcano (Central Chile-Argentina border) - Smithsonian / USGS Weekly Volcanic Activity Report for 15 February-21 February 2017 (New Activity / Unrest)

Servicio Nacional de Geología and Minería (SERNAGEOMIN) Observatorio Volcanológico de Los Andes del Sur (OVDAS) reported that beginning at 1524 on 15 February a seismic swarm at Lanin, consisting of 59 volcanic-tectonic, long-period, and spasmodic tremor events, lasted for 45 minutes. The largest volcano-tectonic event was a M 1.8. The Alert Level was raised to Yellow (second highest level on a four-color scale); ONEMI declared an Alert Level Yellow (the middle level on a three-color scale) for the community of Curarrehue (32 km N).

Sources: Servicio Nacional de Geología y Minería (SERNAGEOMIN), Oficina Nacional de Emergencia-Ministerio del Interior (ONEMI)
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From: Global Volcanism Program, 2017. Report on Lanin. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 15 February-21 February 2017. Smithsonian Institution and US Geological Survey.