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Pacaya volcano near Guatemala City is one of Guatemala's most active volcanoes, and its frequent eruptions are often visible from Guatemala City. Typical activity in recent years includes strombolian activity, lava flow emission and intermittend violent phases of lava fountaining.
Seismic signal last night / this morning from Pacaya (PCG station, INSIVUMEH)
As the seismic signal suggested, a strong increase in activity occurred yesterday evening and culminated in the effusion of a lava flow from the Mackenney crater which lasted about 2 hours. The activity returned back to mild strombolian activity afterwards, with projections reaching about 200 m height and ash plumes rising to 400 m above the crater. The following youtube video was taken by volcanologist Julio Juárez:
The volcano has been mostly hidden in clouds, but strombolian (and perhaps effusive) activity continues as can be seen from glow at night and noises from explosions and degassing. A strong increase of seismic activity seems to have started a few hours ago as suggested by the current seismogram.
Strombolian activity from the Mackenney is gradually intensifying and continues to fill the crater. Explosions reach 75 m height above the vents and some of the ejecta fall outside the crater and produce audible booms. This activity and volcanic tremor is visible on the seismic recording as well.
Strombolian activity persists in the Mackenney crater, which is slowly filling with new lava. The activity can be heard from San Francisco de Sales and ejects incandescent bombs to about 40 m height. As the crater continues to fill up, INSIVUMEH thinks that during the coming days or weeks, new lava flows are likely to appear.
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