The Philippine Institute of Volcanology and Seismology has recorded three volcanic earthquakes and four rock fall events during the 24-hour observation of the Mayon Volcano in Albay.
Three of the earthquakes were related to phreatic eruption events that occurred at 3:10 p.m., 3:18 p.m., and 3:34 p.m. last Tuesday.
Phivolcs said these events generated light brown to grayish ash plume that rose 500 meters, 1000 meters, and 500 meters above the summit, respectively, before drifting southwest.
Weak to moderate emission of white steam-laden plumes was observed creeping down slope around early morning to early afternoon, but was observed to rise up to 250 meters above the summit before drifting south-southwest, west-southwest, and southwest in the afternoon, it added.
Crater glow from the summit could be observed at night.
Mayon Volcano remains under Alert Level 2 which means “a moderate level of unrest.” The active volcano has been under Alert Level 2 since March.
Phivolcs continues to warn the public that “sudden explosions, lava collapses, pyroclastic density currents or PDCs, and ash fall can still occur and threaten areas in the upper to middle slopes of Mayon.” (Ellalyn V. Ruiz)