The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that Mayon Volcano generated its largest pyroclastic density current (PDC) at 10:35 a.m. on February 9, with the event still ongoing at the time of posting. The PDC, locally known as “uson,” traveled about four kilometers down the Mi-isi Gully.
The activity produced a thick, brownish ash plume that rose up to one kilometer high and drifted southwest, resulting in heavy ashfall across several barangays in Camalig and Guinobatan. In some areas of Camalig, visibility reportedly dropped to near zero due to continuous ashfall.
PHIVOLCS explained that pyroclastic flows are composed of extremely hot volcanic gases, ash, and rock fragments that move rapidly down the slopes, posing serious danger to communities near the volcano.
Alert Level 3 remains in effect over Mayon Volcano, indicating intensified volcanic unrest and the potential for hazardous eruptions. Authorities reiterated that entry into the six-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited.
Residents in affected areas were advised to remain indoors, avoid unnecessary travel, and wear face masks to protect themselves from ash inhalation as local disaster officials continue to monitor the situation.
