The lava dome at Cerro Machin volcano (image: SGC)
An increased seismic activity has been detected at the volcano since early night of 23 March.
Seismic recordings registered more than 150 quakes so far, of which two events were measured with magnitudes of M 4.2 (02:25 local time) and 4.0 (02:30 local time), respectively. Earthquakes were located western and southern of the lava dome at depths between 3 and 4 km.
It is worth mentioning that no earthquake activity with a magnitude greater than 4.0 has been measured since December 2022.
The alert level for the volcano remains at Yellow.
Source: Servicio Geológico Colombiano volcano activity update 25 March 2024