Lascar volcano (Chile): increased seismic activity, yellow alert

A significant increase in seismic activity has been registered at Chile's Lascar volcano during during the first half of February, SERNAGEOMIN reports:
Between 1-15 Feb, a total of 350 seismic events or about 21 per day on average were registered, including 233 long-period signals interpreted to be caused by fluid movements, 8 so-called tornillo long-period quakes, one of which lasted 148 seconds, and 3 pulses of volcanic tremor (possibly indicating magma movements).
Visible activity consists in pulsating columns of gasses reaching 50-250 m height from fumaroles.
The alert level is maintained at yellow (eruption possible within weeks to months).

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• Reporte de Actividad Volcánica No. 24 (SERNAGEOMIN)

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