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Manila Bulletin devider Philippines devider National devider Mayon Volcano remains in alert level 3 --- Phivolcs

Mayon Volcano remains in alert level 3 --- Phivolcs

Published Jul 15, 2023 06:07 am
The Philippine Institute of Volcanology and Seismology (Phivolcs) said on Saturday, July 15, that Mayon Volcano remained at alert level 3 as it showed intensified unrest or magmatic unrest. The Mayon Volcano ejects massive pyroclastic density currents (PDC) towards the Basud Gully in Sto. Domingo town in Albay province around 5:30 p.m. on July 10, 2023. (Niño Luces/Manila Bulletin)


As posted in its latest bulletin, Phivolcs said the length of "very slow" lava effusion reached 2.8 kilometers (km) and 1.4 km in Mi-isi (south) and Bonga (southeastern) Gullies. However, 4km of lava collapsed from the crater in the Basud (eastern) channel.

Alert level 3 recommendations

 With the Alert Level status, Phivolcs strictly prohibited entering the six-kilometer radius permanent danger zone (PDZ) and warns pilots not to fly any aircraft close to the volcano.  The prohibition is due to the possibilities of rockfalls or landslides, or avalanches; ballistic fragments; lava flows and fountains; pyroclastic density currents; moderate-sized explosions; lahars during heavy and prolonged rainfall. 

Seismicity, sulfur dioxide flux

 In its 5 a.m. update, Phivolcs said 39 volcanic tremors, 362 rockfall events, and five pyroclastic density currents (PDCs) were recorded in Mayon.  Meanwhile, Mayon produced 2132 tonnes of sulfur dioxide per day. *(Sonny Daanoy)*

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Mayon Volcano Philippine Institute of Volcanology and Seismology (Phivolcs)
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