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Manila Bulletin devider Philippines devider Luzon devider Evacuation eyed in barangay over threat of 'uson' from Mayon Volcano

Evacuation eyed in barangay over threat of 'uson' from Mayon Volcano

Published May 5, 2026 10:27 am
MAYON Volcano (Gov. Noel Rosal FB)
MAYON Volcano (Gov. Noel Rosal FB)
LEGAZPI CITY, Albay - Authorities are considering the possible evacuation of residents within the seven-kilometer Extended Danger Zone (EDZ) in Barangay Mi-isi, Daraga, Albay as concerns grow over the threat posed by accumulated Pyroclastic Density Currents (PDCs), locally known as “uson,” near the “Green Lava” area of Mayon Volcano.
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‎Albay Public Safety and Emergency Management Office (APSEMO) chief Bobby Cristobal said the massive volume of volcanic debris deposited during the May 2 ashfall event should not be disturbed as it could trigger danger to humans.
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‎Cristobal, citing Provincial Engineering Office official Dante Baclao, estimated that around 80 million cubic meters of debris have accumulated at the gully near Green Lava, an area located approximately 5.5 kilometers from Mayon’s crater.
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‎“This poses a significant threat to communities downhill, particularly Barangay Miisi and nearby villages,” Cristobal said.
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‎The Green Lava site, a popular tourist destination often visited via all-terrain vehicles, lies within the volcano’s Permanent Danger Zone.
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‎Cristobal stressed that all activities in the area remain strictly prohibited, in accordance with safety protocols set by the Philippine Institute of Volcanology and Seismology (Phivolcs).
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‎“Drone assessments conducted recently confirmed the presence of a large volume of debris. Phivolcs has strongly advised against approaching or disturbing the area,” he added.
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‎Authorities warned that heavy rainfall could potentially dislodge the accumulated PDCs, sending large rocks and lava cascading down the slopes, posing life-threatening hazards to residents below.
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‎“These deposits are still hot and contain large rocks, lava mixed with hot gas. There is also a possibility of explosive activity, which could endanger anyone nearby,” Cristobal said.
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‎Daraga Mayor Vic Perete confirmed that the terrain has drastically changed due to the buildup of volcanic material.
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‎He noted that a gully previously estimated to be 80 meters deep has now been completely buried by PDC deposits.
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‎“Before, falling into that gully could be fatal due to its depth. Now, it has been filled in entirely by volcanic materials,” Perete said.
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‎Local officials are currently awaiting further guidance from Phivolcs and APSEMO regarding the next course of action, including potential evacuation measures, as the safety of residents remains the top priority.
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Mayon Uson Daraga Albay
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