(Eagle News) — A rockfall event was monitored at Mayon in 24 hours.
The Philippine Institute of Volcanology and Seismology said also monitored at the volcano, which remains on alert level 1, were steam and sulfur dioxide emissions.
PHIVOLCS said the emission of white steam-laden plumes was moderate.
Sulfur dioxide emission was last measured at an average of 676 tons on December 29.
“Overall, the Mayon edifice is still inflated with respect to baseline parameters,” PHIVOLCS said.
PHIVOLCS said that while “no magmatic eruption is imminent,” the volcano “is at an abnormal condition.”
It advised the public to refrain from entering the 6-kilometer radius Permanent Danger Zone (PDZ).
Active stream and river channels and those identified as perennially lahar-prone areas should also be avoided.
“DOST-PHIVOLCS maintains its close monitoring of Mayon Volcano and any new development will be communicated to all concerned stakeholders,” PHIVOLCS said.