Phivolcs issues lahar advisory for Mayon Volcano due to heavy rains

Phivolcs has issued a lahar advisory for Mayon Volcano due to the anticipated heavy rains from Tropical Storm Dante, Severe Tropical Storm Emong, and the southwest monsoon.

These weather disturbances are expected to bring significant rainfall to the Bicol Region, increasing the risk of volcanic sediment flows or lahars.

Communities residing in areas prone to lahar and related hazards around the volcano are urged to exercise increased vigilance and readiness.

Phivolcs explained that the heavy rains could mobilize loose materials from previous eruptions, particularly from the 2018 and 2023 Mayon eruptions, forming lahars in major channels.

The bulk of these erodible deposits are located in the watershed areas of the Miisi, Mabinit, Buyuan, and Basud Channels.

Additionally, older eruption deposits on the eastern and western slopes can also be remobilized as non-eruption lahars through erosion.

Potential lahar flows are specifically anticipated along several channels in Albay Province, including Miisi, Binaan, Anoling, Quirangay, Maninila, Masarawag, Muladbucad, Nasisi, Mabinit, Matanag, Basud, and Bulawan Channels.