Kanlaon Volcano's monitoring network recorded two (2) volcanic earthquakes during the 24-hour observation period. Weak emission of white steam-laden plumes that rose 200 meters before drifting southeast was observed. Sulfur dioxide (SO2) emission was measured at an average of 997 tonnes/day on 04 June 2021. Ground deformation data from continuous GPS and electronic tilt measurements have recorded deflation that began on March 2021 although the edifice remains slightly inflated since June 2020. These parameters indicate that hydrothermal or tectonic processes occurring beneath the edifice have declined.

DOST-PHIVOLCS would like to remind the public that Kanlaon Volcano is at Alert Level 1, which means that it is at an abnormal condition and has entered a period of unrest. The local government units and the public are strongly reminded that entry into the 4-kilometer radius Permanent Danger Zone (PDZ) must be strictly prohibited due to the further possibilities of sudden and hazardous steam-driven or phreatic eruptions. Civil aviation authorities must also advise pilots to avoid flying close to the volcano’s summit as ejecta from any sudden phreatic eruption can be hazardous to aircraft. DOST-PHIVOLCS is closely monitoring Kanlaon Volcano’s activity and any new development will be relayed to all concerned.

DOST-PHIVOLCS