MAYON VOLCANO BULLETIN 17 February 2017 8:00 A.M. PDF Print

Mayon Volcano’s seismic monitoring network did not detect any volcanic earthquake during the past 24 hours. Moderate emission of white steam plumes that crept downslope towards west-southwest was observed. Precise leveling survey results obtained on February 5-10, 2017 indicated deflation of the edifice relative to November 2016 survey. However, the volcano remains inflated relative to 2010 results. Continuous GPS and tiltmeter measurements also indicate an inflationary trend since July 2016. Sulfur dioxide (SO2) emission was measured at an average of 105 tonnes/day on January 30, 2017.

Alert Level 1 remains in effect over Mayon Volcano, which means that it is at 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.