Mayon Volcano remained under Alert Level 3 on Monday, January 12, 2026, after state volcanologists recorded 133 rockfall events and 37 pyroclastic density currents (PDCs) over the past 24 hours.

In its latest bulletin, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) said Mayon showed intensified magmatic unrest, recorded from midnight Sunday to midnight Monday.

Weak volcanic tremor also persisted during the period.

PHIVOLCS noted ongoing lava dome and lava flow effusion, while crater glow remained visible to the naked eye, described as fair in intensity.

Volcanic gas emissions were also elevated, with sulfur dioxide output measured at 526 tonnes per day as of January 11.

The agency said Mayon released a moderate plume rising up to 800 meters above the crater, drifting toward the east-southeast, southeast, and northeast. Ground deformation data further showed that the volcano’s edifice remains inflated, indicating continued magma movement beneath the surface.

PHIVOLCS reiterated that entry into the 6-kilometer Permanent Danger Zone (PDZ) is strictly prohibited, while access to the Extended Danger Zone should not be allowed without extreme vigilance.

The agency also warned against flying any aircraft close to the volcano.

Residents near Mayon were reminded of possible hazards, including rockfalls, landslides, ballistic fragments, lava flows, lava fountaining, pyroclastic density currents, moderate explosions, and lahar flows during heavy or prolonged rainfall.

PHIVOLCS advised the public to stay alert and continue monitoring official updates as volcanic activity remains elevated.