Bulusan Volcano in Sorsogon. (Photo courtesy of Atty. Annalyn Sherry Hibo Gamboa)

LEGAZPI CITY – The Sorsogon Provincial Disaster Risk Reduction and Management Office (PDRRMO) canceled all its activities within the 5 to 6-kilometer danger zone including the two-kilometer extended permanent danger zone of Bulusan Volcano.

In an advisory issued on Friday, Sorsogon PDRRMO said the cancellation is due to the increased volcanic earthquake recorded by the Philippine Institute of Volcanology and Seismology (Phivolcs) in the past 24 hours.

"Please be informed that due to the recent recorded 149 volcanic earthquakes, all concerned are advise not to conduct any type of activities within the 5–6 Km Danger Zone including the 2 Km Extended Permanent Danger Zone," the advisory read.

Sorsogon PDRRMO also said the public is directed to take precautionary measures since the Alert Level 1 status remains over Mt. Bulusan.

In its advisory on Friday, Phivolcs said 149 volcanic earthquakes were recorded in Bulusan for the past 24 hours.

"Local government units and the public are reminded that entry into the 4-kilometer radius Permanent Danger Zone (PDZ) must be strictly prohibited and that vigilance in the 2-kilometer Extended Danger Zone (EDZ) on the southeast sector must be exercised due to the increased possibilities of sudden and hazardous phreatic eruptions," the advisory said.

Civil aviation authorities advised pilots to avoid flying close to the volcano’s summit as ash from any sudden phreatic eruption can be hazardous.

People living within valleys and along the river/stream channels especially on the southeast, southwest, and northwest sector of Bulusan's edifice were advised to be vigilant against sediment-laden stream flows and lahars in the event of heavy and prolonged rainfall should a phreatic eruption occur. (PNA)