Mayon Volcano in Albay, Philippines, continues its effusive eruption for the 21st consecutive day, generating lava flows, rockfall, and pyroclastic density currents, according to the Philippine Institute of Volcanology and Seismology (PHIVOLCS).
Mayon Volcano Eruption Update
PHIVOLCS shared photos taken between 8:15 p.m. and 8:17 p.m. Tuesday showing incandescent lava flows and pyroclastic density currents, locally known as “uson,” descending the volcano’s slopes.
Lava flows, pyroclastic density currents, and rockfalls were observed in the Mi-isi (south), Bonga (southeast), and Basud (east) Gullies. A time-lapse video of the eruption was also released, covering the period from 8:01 p.m. to 8:08 p.m.
“Alert Level 3 prevails over Mayon and entry into the 6-km Permanent Danger Zone must be prohibited,” PHIVOLCS warned.
As of Tuesday morning, the agency logged 272 volcanic earthquakes, 155 rockfall events, and 44 pyroclastic density currents. A crater glow, plumes, and ground deformation were also observed.
PHIVOLCS regularly measures baselines using electronic distance meters (EDM) along Mayon Volcano’s slopes to monitor ground deformation. Changes in these baselines may indicate inflation related to subsurface processes, such as magmatic intrusions.
The agency also monitors the volcano’s sulfur dioxide emissions, as sulfur dioxide is a primary gas component of magma released as it approaches the surface.
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