6 rockfall events logged at Mayon Volcano – Phivolcs

Six rockfall events were recorded at Mayon Volcano from 12 a.m. Sunday to 12 a.m. Monday, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.

“Batay sa 24-hour monitoring as of midnight, December 15, 2025, walang naitalang volcanic earthquake. Pero mayroon tayong anim na rockfall events at may weak crater glow na makikita lamang sa telescope,” said Phivolcs director Teresito Bacolcol in Bagong Pilipinas Ngayon.

(Based on the 24-hour monitoring as of midnight earlier, December 15, 2025, no volcanic earthquake was recorded. But there were six rockfall events, and a weak crater glow can only be seen through a telescope.)

Phivolcs added that Mayon emitted an average of 307 tonnes of sulfur dioxide per day as of December 10.

Given the current state of the volcano, the bureau said Alert Level 1 remains in effect. Phivolcs, however, noted that there is no immediate threat of an eruption.

“At sa ngayon pasok pa rin naman yung parameters natin sa Alert Level 1 or low-level activity,” Bacolcol said.

(And for now, our parameters still fall under Alert Level 1, or low-level activity.)

“Kung sasabihin natin na puputok ba yung bulkan in the next few days, ay hindi pa po kasi nasa Alert Level 1 pa rin tayo,” he added.

(If we are asked whether the volcano will erupt in the next few days, the answer is not yet, because we are still at Alert Level 1.)

Last week, Phivolcs reported that spines of dark lava were observed emerging from Mayon Volcano’s summit lava dome, indicating the presence of new, shallow magma within the edifice.

Under Alert Level 1, entry into the 6-kilometer radius of the permanent danger zone and the flying of any aircraft close to the volcano are prohibited.—MCG, GMA Integrated News