SERNAGEOMIN changed the level of alert of Calbuco to amarilla.
Over the past three days, the seismic activity of the volcano has increased, with a total of 161 volcano-tectonic earthquakes, in connection with the fracturing of rocks, located between 8 and 10 km deep and 1-4 km. the active crater.
Inflation has been detected by the inclinometer just 4.5 km west of the active crater, showing an accumulated variation of 60μrad.
Previous observations suggest the reactivation of a deep magma chamber under the influence of seismic activity and deformation, involving an internal imbalance that could culminate in an eruptive activity over the next weeks or months.
The most affected populations are Ensenada, Correntoso, Colonia Rio Su and Alerce.
The technical amarilla alert is accompanied by a high risk area of 2 km around the main crater.
Source: SERNAGEOMIN special -Flash volcanic activity 23.06.2016 / 1:20 p.m. local