Mayon volcano. Photo courtesy of Camalig Information Office.
Lava from Mayon Volcano continued to creep down one of its channels, signaling sustained activity beneath the crater, according to state volcanologists on Tuesday.
The Philippine Institute of Volcanology and Seismology (Phivolcs) said the lava flow in the Mi-isi gully had extended slightly to about 1.7 kilometers, edging forward from the previous day’s measurement.
Other channels remained largely unchanged, with lava flows in the Basud and Bonga gullies holding steady at 3.8 kilometers and 3.2 kilometers, respectively.
Phivolcs also noted an uptick in pyroclastic density currents, locally called “uson,” indicating more frequent movement of hot gas and volcanic material down the slopes.
Volcanic earthquakes increased as well, with more events recorded and some lasting longer compared to previous observations.
Rockfall activity, however, eased slightly even as hundreds of incidents were still logged within the monitoring period.
Sulfur dioxide emissions dipped from earlier readings, though a visible crater glow and a weak plume rising above the summit continued to be observed.
Alert Level 3 remains in place over Mayon, with authorities warning that the six-kilometer permanent danger zone stays strictly off-limits due to risks from lava flows, explosions, rockfalls, pyroclastic currents, and lahar during heavy rains.
