The ongoing effusive eruption at Mayon Volcano in the Philippines has entered its 43rd consecutive day, with continued lava flows and minor strombolian activity recorded early Tuesday, February 17, 2026. The Philippine Institute of Volcanology and Seismology (PHIVOLCS) is closely monitoring the situation, maintaining Alert Level 3 as the volcano exhibits persistent signs of unrest. This prolonged activity poses ongoing risks to nearby communities, prompting continued warnings and preparedness measures.
The latest observations from PHIVOLCS indicate that minor strombolian activity – short, explosive bursts of gas and lava – was detected at 2:30 a.m. Local time. This activity is contributing to the generation of incandescent lava flows, pyroclastic density currents (PDCs), often referred to locally as “uson,” and rockfall events. The persistent eruption underscores the dynamic nature of Mayon Volcano and the potential for further hazardous activity.
As of February 5, 2026, lava flows had reached radial distances of approximately 3.8 kilometers (2.4 miles) down the Basud gully (east side of the volcano), 1.6 kilometers (1 mile) down the Bonga gully (southeast), and 1.3 kilometers (0.8 miles) down the Mi-isi Gullies (south), according to PHIVOLCS. The agency’s monitoring network likewise recorded 10 volcanic earthquakes, 318 rockfalls, and 33 PDC signals within the 24-hour period leading up to Tuesday’s report. A crater glow was also observed, indicating ongoing heat and activity within the summit crater.
Sulfur Dioxide Emissions and Ground Deformation
On Monday, February 16, Mayon Volcano released 4,650 tonnes of sulfur dioxide into the atmosphere, a measure used by volcanologists to assess the level of volcanic gas emissions. PHIVOLCS also noted moderate ground deformation, indicating changes in the volcano’s shape potentially caused by magma movement beneath the surface. These observations, combined with the ongoing eruptive activity, reinforce the need for continued vigilance.
Alert Level 3 and Safety Zones
Mayon Volcano remains at Alert Level 3, signifying a “high level of volcanic unrest.” Under this alert level, the public is strictly prohibited from entering the 6-kilometer (3.7 mile) radius Permanent Danger Zone (PDZ) due to the threats posed by PDCs, lava flows, and rockfalls. Flights are also prohibited over the volcano to ensure aviation safety. Residents within an 8-kilometer (5 mile) radius have been advised to prepare for potential evacuation should the situation escalate to Alert Level 4, which would indicate a more intense and imminent eruption.
PHIVOLCS reminds the public that several hazardous phenomena may occur during this period of unrest, including rockfall, falling chunks of lava or rocks, PDCs, medium-scale explosions, and lahar flows – particularly during periods of heavy rainfall. Lahars are mixtures of volcanic ash, rock, and water that can flow rapidly down river channels, posing a significant threat to communities in low-lying areas.
What to Expect Next
The ongoing monitoring of Mayon Volcano by PHIVOLCS will continue to be crucial in assessing the evolving situation. Volcanologists will closely track changes in eruptive activity, ground deformation, gas emissions, and seismic activity to provide timely warnings and recommendations to local authorities and the public. The duration of the eruption and the potential for escalation remain uncertain, emphasizing the importance of continued preparedness and adherence to safety guidelines.
Stay informed about the latest updates from PHIVOLCS and local disaster management agencies. Share this information with your community to ensure everyone is aware of the potential risks and safety measures.
