Kanlaon Volcano's monitoring network recorded one (1) volcanic earthquake during the 24-hour observation period. Sulfur dioxide (SO2) emission was measured at an average of 467 tonnes/day on 31 January 2021. Ground deformation data from continuous GPS measurements recorded a slight inflation of the lower and middle slopes since June 2020 followed by a pronounced inflation of the western middle slopes this November. Electronic tilt monitoring on the southeastern flanks likewise recorded inflation on the lower to middle slopes that began in late June 2020. These parameters may indicate hydrothermal or magmatic processes occurring deep beneath the edifice.

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