On 09 September 2024, 11:30 PM, DOST-PHIVOLCS issued a notice of increased seismic activity at Kanlaon Volcano. A total of twenty-five (25) volcano-tectonic or VT earthquakes have been recorded by the Kanlaon Volcano Network since 8:32 AM this morning, with the last 22 having been recorded beginning 10:35 PM this evening. Canlaon City, Negros Oriental residents report that at least five of these earthquakes were felt. VT earthquakes are generated by rock fracturing processes and the increase in VT activity may possibly precede eruptive activity.
On 10 September 2024, 11:00 AM, DOST-PHIVOLCS issued a notice of increased seismic activity at Kanlaon Volcano. A total of two hundred eighty-eight (288) volcano-tectonic or VT earthquakes have been recorded by the Kanlaon Volcano Network since 08:30 PM of 09 September 2024. The events were generated between 0 to 9 kilometers depths beneath the north-eastern flanks of the volcanic edifice and the strongest events were felt at Intensity II in some barangays of Canlaon City, Negros Oriental. Rumbling sounds were reported by some residents of Bago City. Strong sulfur fumes have been reported in a few barangays in Bago, La Carlota and Canlaon Cities. VT earthquakes are generated by rock fracturing processes and the increase in VT activity strongly indicates progressive rock-fracturing beneath the volcano as rising magma drives a path towards the surface.
At 7:00 pm, DOST-PHIVOLCS issued a notice of elevated volcanic SO2 gas flux at Kanlaon Volcano. Volcanic sulfur dioxide (SO2) gas emission from the summit crater of Kanlaon based on campaign Flyspec measurements today, 10 September 2024, averaged 9,985 tonnes/day. This is the highest emission from the volcano recorded since instrumental gas monitoring began. Kanlaon has been degassing increased concentrations of volcanic SO2 this year at an average rate of 1,273 tonnes/day prior to the 3 June 2024 eruption, but emission since then has been particularly elevated at a current average of 3,468 tonnes/day. Sulfuric odors were reported in the following localities; Brgy. Ilijan, Bago City; Brgy. Ara-al and Brgy. San Miguel, La Carlota City; Brgy. Masulog, Brgy. Linothangan and Brgy. Pula, Canlaon City.
The Alert Level 2 (increasing unrest) still prevails over Kanlaon, but that current activity may lead to eruptive unrest and an increase in the Alert Level.
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