Kanlaon Volcano continues to show signs of increased unrest but remains at Alert Level 2, the Philippine Institute of Volcanology and Seismology (Phivolcs) reported on Saturday, as monitoring data point to persistent internal activity beneath the volcano.
Based on observations over the past 24 hours, Phivolcs recorded three volcanic earthquakes, all of which were strong enough to be accurately located. Seismic activity remains low but notable, indicating ongoing processes within the volcanic system.
Sulfur dioxide emissions were measured at 1,006 tonnes per day during monitoring conducted on January 23, reflecting continued degassing from the volcano. Gas emissions produced a plume that rose approximately 300 meters above the crater before drifting west and northwest, which Phivolcs classified as moderate emission.
Ground deformation measurements further revealed inflation of the volcanic edifice, suggesting magma or volcanic fluids are accumulating beneath the surface. This type of deformation is commonly associated with pressurization within an active volcano and supports the assessment of sustained unrest.
Phivolcs warned that entry into the four-kilometer Permanent Danger Zone around Kanlaon remains strictly prohibited. The agency also reiterated that aircraft should not be allowed to fly close to the volcano due to the potential hazards posed by sudden eruptions or ash emissions.
Under Alert Level 2, Kanlaon may still generate sudden steam-driven or phreatic eruptions, as well as other activity that could precede renewed magmatic unrest. Communities near the volcano were advised to remain vigilant and to stay updated on official advisories.
Kanlaon Volcano straddles the provinces of Negros Occidental and Negros Oriental. Phivolcs said continuous monitoring is ongoing and reminded the public to consult official bulletins, hazard maps, and preparedness guides available on its website for the latest information.