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LOOK: PHIVOLCS Reports Mayon Volcano 'Crater Glow'

PHIVOLCS explains the possible reason behind the new development.

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) has released photos of the “crater glow” of Mayon Volcano in Albay, Bicol. The photos were taken on February 4, 7:00 p.m. from the Mayon Volcano Observatory in Ligñon Hill, Legazpi City.

The crater glow is “likely caused by hot magmatic gases heating the overlying atmosphere,” PHIVOLCS said in an advisory dated February 5. They said it “suggests the possibility that remnant magma may be quietly rising,” referring to the March 2018 eruption.

PHIVOLCS clarified that the volcano’s recent behavior is “mainly driven by changes occurring within magma already emplaced beneath the edifice” and *not* by “renewed magma intrusion events.”

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Mayon Volcano has been at Alert Level 2 since March 2018, according to Rappler. It remains at that level, which means “a moderate level of unrest." 

PHIVOLCS strongly recommended banning people from entering the six kilometer-radius Permanent Danger Zone and seven kilometer-radius Extended Danger Zone, from Anoling, Camalig to Sta. Misericordia, Sto. Domingo.

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PHIVOLCS reminded the public that “sudden explosions, lava collapse, pyroclastic density currents (PDC), and ashfall can occur without warning and threaten areas in the upper to middle slopes of Mayon.”

Pilots are advised against flying close to Mayon’s summit to avoid any “airborne ash and ballistic fragments from sudden explosions and PDCs.”

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