THE Philippine Institute of Volcanology and Seismology (Phivolcs) has issued a lahar advisory as it warned residents living near river channels around Mayon Volcano to be on alert and be ready to be evacuated, especially when rains continue in the coming days.

Dr. Teresito 'Toto' Bacolcol, Phivolcs director, told the 'Laging Handa' public hearing on PTV-4 that his agency has already identified river channels including those in Niisi, Binaan and Anoling going to Daraga, Albay; Girangay River going to Camalig, also in Albay; and Maninila River going to Guinobatan, also in the same province, among others.