Manila, Feb. 10 -- The Department of Science and Technology - Philippine Institute of Volcanology and Seismology (DOST-Phivolcs) has recorded the largest pyroclastic density current (PDC) since January, causing heavy ashfall that has affected 32 barangays in Camalig and Guinobatan, Albay.

In a Bagong Pilipinas Ngayon interview on Tuesday, Paul Alanis, Phivolcs Supervising Science Research Specialist at the Mayon Observatory, however, said there is no observed indication to warrant a higher alert level, adding that Alert Level 3 remains over the volcano.

"May mga possibilities po tayong tinitingnan, mga parametro (We are looking at some possibilities, some parameters)," he said.

Phivolcs said parameters that would suggest a higher level...