ONEMI and SERNAGEOMIN reported that during 8-13 August multiple explosions at Nevados de Chillán?s Nicanor Crater generated gas-and-ash plumes and ejected incandescent material around the crater.
These explosions were recorded at 0438 on 8 August, at 2223 on 10 August, at 1831 and 1952 on 12 August, and at 0427, 1058, and 1116 on 13 August.
Eruption plumes rose as high as 765 m above the summit.
The Alert Level remained at Orange, the second highest level on a four-color scale, and residents were reminded not to approach the crater within 3 km.
ONEMI maintained an Alert Level Yellow (the middle level on a three-color scale) for the communities of Pinto, Coihueco, and San Fabián; on 13 August they stated that the public should stay at least 3 km away from the crater on the SW flank and 5 km away on the ENE flank.
Sources: Oficina Nacional de Emergencia-Ministerio del Interior (ONEMI) ,Servicio Nacional de Geología y Minería (SERNAGEOMIN)