Mayon Volcano in Albay produced an ash emission from its summit crater on Tuesday, November 3, as it maintained elevated activity following its escalation to Alert Level 3 on October 30, according to the Philippine Institute of Volcanology and Seismology (PHIVOLCS).
The emission occurred at 8:22 a.m., sending a plume 1.6 kilometers above the crater that drifted toward the southwest. Over the preceding 24-hour monitoring period, PHIVOLCS recorded 13 volcanic earthquakes and a single rockfall signal.
Observers noted a fair crater glow visible to the naked eye alongside minor strombolian activity, which involved brief explosive bursts ejecting glowing materials and producing short lava fountains.
Mayon continues under Alert Level 3, reflecting the transition into what PHIVOLCS previously characterized as “a new phase of magmatic eruption.” This level indicates heightened unrest and a higher risk of a hazardous eruption, as magma sits near or at the surface.
Authorities warn that conditions at this stage may involve frequent tremors, rising sulfur dioxide levels, continuous rockfalls, vigorous steaming, and ongoing swelling of the volcanic edifice.
PHIVOLCS strictly reiterated that entry into the six-kilometer permanent danger zone (PDZ) remains prohibited.