(Eagle News) — The Philippine Institute of Volcanology and Seismology has downgraded Mayon’s alert status to “normal” following a “continued decline in all monitoring parameters.”
PHIVOLCS said, for instance, the frequency of volcanic earthquakes has declined to baseline levels (0-5 events/day) for the last six months.
Data from Global Positioning Systems (GPS) and campaign Electronic Distance Measurement (EDM) and Precise Leveling (PL) also showed a “slight and decreasing rate of inflation of the Mayon edifice this year and continued deflation of its southwest slopes since lava flows were deposited on these in 2018,” PHIVOLCS said.
Sulfur dioxide emissions from the Mayon crater has also declined below the baseline level of 500 tons per day since July 14.
According to PHIVOLCS, the faint crater glow continues to be observed but only through a camera and not with the naked eye.
Its last visibility with the naked eye was in May 2021.
“In view of the above, PHIVOLCS-(Department of Science and Technology) is now lowering the alert status of Mayon from Alert Level 1 to Alert Level 0. This means observational parameters have returned to baseline levels and no magmatic eruption is foreseen in the immediate future,” PHIVOLCS said.