Report on Mayon (Philippines) — 26 October-1 November 2022
Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 26 October-1 November 2022
Managing Editor: Sally Sennert.
Please cite this report as:
Global Volcanism Program, 2022. Report on Mayon (Philippines) (Sennert, S, ed.). Weekly Volcanic Activity Report, 26 October-1 November 2022. Smithsonian Institution and US Geological Survey.
Mayon
Philippines
13.257°N, 123.685°E; summit elev. 2462 m
All times are local (unless otherwise noted)
On 28 October PHIVOLCS warned of potential lahars around Mayon due to intense rains from an impending tropical storm. The rains could generate lahars in several drainages, including in the Miisi, Binaan, Anoling, Quirangay, Maninila, Masarawag, Muladbucad, Nasisi, Mabinit, Matan-ag, and Basud. Communities along the middle and lower flanks and in areas downstream were vulnerable to lahars. The Alert Level remained at 2 (on a 0-5 scale) and the public was reminded to stay outside of the 6-km-radius Permanent Danger Zone.
Geological Summary. Symmetrical Mayon, which rises above the Albay Gulf NW of Legazpi City, is the most active volcano of the Philippines. The steep upper slopes are capped by a small summit crater. Recorded eruptions since 1616 CE range from Strombolian to basaltic Plinian, with cyclical activity beginning with basaltic eruptions, followed by longer periods of andesitic lava flows. Eruptions occur predominately from the central conduit and have also produced lava flows that travel far down the flanks. Pyroclastic density currents and mudflows have commonly swept down many of the approximately 40 ravines that radiate from the summit and have often damaged populated lowland areas. A violent eruption in 1814 killed more than 1,200 people and devastated several towns.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)