Phivolcs raises alarm over Bulusan Volcano after 72 quakes recorded

The Philippine Institute of Volcanology and Seismology (Phivolcs) has raised concerns over Bulusan Volcano in Sorsogon due to increased seismic activity, recording 72 volcanic-tectonic earthquakes since Saturday.

These earthquakes, associated with rock fracturing at shallow depths less than 10 kilometers beneath the northern sector, indicate a state of low-level unrest, maintaining Alert Level 1.

Phivolcs observed weak degassing from active vents and noted that the average sulfur dioxide emission on Thursday was below the baseline.

There is a heightened possibility of sudden, steam-driven or phreatic eruptions from the crater and active vents.

The public is strongly advised against entering the four-kilometer Permanent Danger Zone and urged to exercise vigilance within the two-kilometer extended danger zone on the southeast sector due to potential hazards.