The Philippine Institute of Volcanology and Seismology (Phivolcs) said a total of 150 rockfall events were recorded at Mayon Volcano from 12 a.m. on January 9 to 12 a.m. on January 10 as the volcano remains under Alert Level 3.
In a statement, the agency also reported recording 90 pyroclastic density currents (PDCs) at the volcano during the same monitoring period.
Based on monitoring data, Phivolcs also recorded lava dome effusion and collapse at Mayon Volcano, as well as signs of incipient lava flow.
The agency said sulfur dioxide emissions from the volcano were measured at 195 tonnes per day on January 8. It added that volcanic plumes rose to about 500 meters, with moderate emissions drifting toward the west-northwest and southwest.
Phivolcs reiterated that entry into the six-kilometer radius Permanent Danger Zone and entry without vigilance into the Extended Danger Zone remain prohibited, as the volcano edifice remains inflated based on ground deformation data.
The agency also maintained that flying aircraft close to the volcano is still not allowed.
Meanwhile, more than 4,000 residents in Albay have been displaced after Mayon Volcano was raised to Alert Level 3, the National Disaster Risk Reduction and Management Council (NDRRMC) said Saturday.
In its latest situational report, the NDRRMC said a total of 1,143 families, or 4,139 individuals, have been affected by the ongoing volcanic activity.
Of this number, 1,128 families, or 4,091 persons, are currently staying in 14 evacuation centers, while 15 families, or 48 individuals, are being assisted outside evacuation facilities.
Among the hardest-hit areas are Tabaco City, Malilipot, Camalig, Ligao City, and Guinobatan.
Government assistance has been extended to all affected families, with the Department of Social Welfare and Development reporting that 100 percent of displaced households have received aid, including family food packs, hygiene kits, sleeping kits, and ready-to-eat food.
The total cost of assistance has reached more than P6.6 million.
Editor’s Note: This is an updated article. Originally posted with the headline: “Mayon Volcano logs 150 rockfall events, 90 pyroclastic density currents”
