THE Kanlaon volcano's seismic monitoring network has recorded 104 new tremors in a 24-hour period based on a new report issued by the Philippine Institute of Volcanology and Seismology (Phivolcs).
Based on an update issued Tuesday, June 23, the quakes were all centered at the western flanks of the volcano. Majority of the tremors were minor, although one earthquake, a magnitude 3, was recorded at 5:07 a.m. Tuesday and was felt at intensity 2 in La Carlota City in Negros Occidental.
Zeaphard Caelian, head of the Provincial Disaster Management Program Division, said Kanlaon is still under Alert Level 1.
Observers also noted the volcano has a released weak emission of white steam-laden plume, which rose to 300 meters before drifting to the southeast.
Ground deformation data from continuous GPS measurements indicate a slight deflation of the lower and mid slopes since January 2020. Short-term electronic tilt monitoring on the southeastern flanks recorded continuing deflation on the lower slopes but inflation on the mid slopes since April 2020.
The parameters were noted to indicate that hydrothermal or magmatic activity is occurring beneath the edifice.
The Kanlaon volcano had been placed on "Alert Level 1" since March of this year due to abnormal conditions observed by volcanologists.
Kanlaon is located between the borders of Negros Oriental and Negros Occidental. At 2,465 meters above sea level, it is the highest point in Negros Island and in the Visayas.
Caelian said the four kilometer permanent danger zone is still observed at Kanlaon.