Manila, Jan. 6 -- The Philippine Institute of Volcanology and Seismology (Phivolcs) on Tuesday raised the alert status of Mayon Volcano from Level 2 (increasing unrest) to Level 3 (increased tendency towards a hazardous eruption).

Repeated collapse of the unstable summit dome of Mayon Volcano has generated an increasing number and volume of rockfall events.

Since Jan. 1, a total of 346 rockfall events and four volcanic earthquakes were recorded, compared to 599 rockfall events from November to December 2025.

These rockfall events had durations of one to five minutes and transported lava debris within a kilometer range of the southern upper slopes.

Phivolcs added the volume of discrete rockfall, with observed incandescence at nighttime...