Puracé volcano (Colombia): intense seismic activity with magnitude 3.3 quake, alert level raised

 

The volcano observatory Servicio Geológico Colombiano (SGC) raised the alert status to "yellow", as an elevated seismic activity has been recorded over the past two days characterized by picking up both in numbers and strength.

A swarm of earthquakes became more frequent on 28 March from 20:00 local time and is still ongoing at the time of this update. 479 volcano-tectonic (VT or high-frequency) quakes have been detected with a maximum magnitude of 3.3 that occurred at 12:14 local time today. High-frequency earthquakes are a sign that magma continues to intrude and push its way into deeper rock layers related to rock fracturing. 183 long-period (LP or low-frequency) and 119 tremor events have been detected so far that indicate elevated fluid movements of gas, water and possibly magma intrusions within the volcano.
Source: Servicio Geológico Colombiano volcano activity update 30 March 2022