The Philippine Institute of Volcanology and Seismology (PHIVOLCS) recorded 253 volcanic earthquakes and 297 rockfall events at Mayon Volcano on Friday, March 13, as the volcano continues to show signs of unrest.

In its latest 24-hour observation report, PHIVOLCS also recorded eight pyroclastic density current signals, indicating continued movement of hot volcanic materials down the slopes of the volcano.

The agency said lava effusion and lava flows remain ongoing, particularly through the Basud, Bonga, and Mi-isi gullies, with occasional minor strombolian activity and short-lived lava fountaining observed.

PHIVOLCS added that the volcano’s crater glow remains visible to the naked eye, while sulfur dioxide emissions reached 2,466 tonnes per day as of March 12.

The volcanic plume was observed rising about 800 meters above the crater before drifting toward the southeast and southwest.

Due to the sustained volcanic activity, Alert Level 3 remains in effect, which prohibits entry into the 6-kilometer Permanent Danger Zone to ensure public safety. While aircraft are also advised to avoid flying close to the volcano’s summit.