PHIVOLCS warns of potential lahar on Mayon river channels

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) on Saturday warned of potential lahar and sediment-laden streamflows on all river channels draining the slopes of Mayon Volcano due to tropical depression Quinta.

LAHAR ADVISORY FOR MAYON VOLCANO
24 October 2020
05:30 PM

DOST-PHIVOLCS#MayonVolcano #LaharAdvisoryhttps://t.co/QE3OOmv8Fq pic.twitter.com/tkZFdx3Zln

— PHIVOLCS-DOST (@phivolcs_dost) October 24, 2020

According to PHIVOLCS, “prolonged and heavy rainfall may generate post-eruption lahar on major channels draining the Mayon Volcano edifice by incorporating loose material from thick pyroclastic density current deposits and remnant ashfall.”

Quinta was forecast to make landfall over the Bicol Region between Sunday evening and Monday morning, bringing light to moderate with, at times, heavy rains over the area during the period.

“Due to this development, DOST-PHIVOLCS strongly recommends increased vigilance and readiness of communities in pre-determined zones of lahar hazards in Mayon Volcano,” PHIVOLCS said in an advisory.

The agency stressed vigilance over the Miisi, Binaaan, Anoling, Quirangay, Maninila, Masarawg, Muladbucad, Nasisi, Mabinit, Matan-ag, and Basuc Channels.

“Communities and local government units beside these drainages are advised to be additionally vigilant and to move residents to high ground should heavy rain occur,’ PHIVOLCS said. -MDM, GMA News