MANILA, Philippines — Twenty-six earthquakes, along with 303 rockfall events and three pyroclastic density currents (PDCs), were recorded in Mayon Volcano over the last 24 hours, the Philippine Institute of Volcanology and Seismology (Phivolcs) said on Sunday.
Based on its 8 a.m. bulletin, Phivolcs said that the volcano continued to display “intensified unrest or magmatic unrest” and stays under Alert Level 3 due to “potential explosive activity within days or weeks.”
Earlier, Phivolcs monitored eight lower volcanic quakes, one lower PDCs, and 303 rockfall events.
Furthermore, the volcano has effused “very slow” lava flow, which remained at 2.8 kilometers (km) and 1.3 km along Mi-isi and Bonga Gullies, respectively, while the other lava flows on both gullies also stayed at 3.3 km and 4 km along Basud Gully.
Phivolcs also reported that the volcano had increased its sulfur dioxide emission daily from 792 tons logged on July 8 to 1145 tons recorded on July 9, with plumes reaching 1,000 meters tall while drifting west-southwest.
Locals within the area were warned that rockfalls, landslides, avalanches, ballistic fragments, lava flows, and moderate-sized explosions, among others, might occur amid Mayon’s unrest.
Based on the National Disaster Risk Reduction and Management Council, Mayon’s unrest had already affected 37,953 individuals or 9,779 families residing in 26 barangays within Bicol Region as of July 6.
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