Manila, May 3 -- Mayon Volcano will remain under Alert Level 3 (High Level of Volcanic Unrest) after the pyroclastic density currents (PDC) that caused massive ashfall in several towns and a city in Albay province, according to the Philippine Institute of Volcanology and Seismology (Phivolcs).

In a statement Sunday, Ma. Antonia Bornas, chief of Phivolcs' volcano monitoring and eruption prediction division, said there has been no significant change in Mayon's overall monitoring parameters since the PDC Saturday.

"What happened was that the newest lava flow in Mi-isi Gully, being fed by lava effusion at the crater, instead of growing, advancing, or lengthening, like what has been happening since 6 January 2026, started collapsing," Bornas...