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The Mayon Volcano Observatory has observed continuous slow lava effusion from the summit crater of Mayon, said the Philippine Institute of Volcanology and Seismology (Phivolcs) on Monday, Nov. 6.
From Nov. 4 to Nov. 5 evening, the Mayon Volcano Observatory noticed incandescent pyroclastic density currents (PDCs) or “uson” moving downward along the Miisi, Bonga, and Basud Gullies, said Phivolcs.
Phivolcs also said a total of 84 rockfall events and 141 volcanic earthquakes were also recorded from which 139 of those are volcanic tremors with a duration of one to five minutes.
Meanwhile, the sulfur dioxide (SO2) emission has an average of 920 tons per day as of Nov. 5, said Phivolcs.
The public is warned of the dangers of PDCs, lava flows, and rockfalls among other volcanic hazards, as the Mayon Volcano remained under Alert Level 3. (Lizst Torres Abello)
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