Volcano Advisory

Mayon Volcano’s monitoring network recorded one (1) volcanic earthquake during the past 24-hour observation period. Activity at the summit crater consisted of weak to moderate emission of white steam-laden plumes that crept downslope before drifting west and west-northwest. Sulfur dioxide (SO2) emission was last measured at an average of 80 tonnes/day on 08 March 2021. Ground deformation data from continuous GPS monitoring indicate that the edifice is still inflated relative to July 2019 despite a period of general deflation since July-August 2020, and has been undergoing short-term inflation since November 2020. Deflation of the edifice with short-term inflation of the northwestern slopes since December 2020 has also been recorded by electronic tilt monitoring.

DOST-PHIVOLCS would like to remind the public that Mayon Volcano is at Alert Level 1, which means that it is at an abnormal condition. Although this means that presently no magmatic eruption is imminent, it is strongly advised that the public refrain from entering the 6-kilometer radius Permanent Danger Zone (PDZ) due to the perennial life-threatening dangers of rockfalls, landslides/avalanches at the middle to upper slope, sudden ash puffs and steam-driven or phreatic eruptions from the summit. Active stream/river channels and those identified as perennially lahar-prone areas on all sectors of the volcano should also be avoided especially during extreme weather conditions when there is heavy and prolonged rainfall. DOST-PHIVOLCS maintains its close monitoring of Mayon Volcano and any new development will be communicated to all concerned stakeholders.