The Philippine Institute of Volcanology and Seismology on Monday, Aug. 17, warned of an increase in volcanic sulfur dioxide (SO2) emissions from Mayon Volcano.
In an advisory issued at 10:30 p.m., PHIVOLCS said Mayon reached a "very high emission rate" of 8393 tons/day, the "highest emission from Mayon recorded since volcanic gas emissions began decreasing" on July 16.
PHIVOLCS said the "abrupt rise" follows a "short-term trend of swelling or pressurization of the northern and eastern sections of the volcano edifice..." recorded.
Volcanic seismicity and real-time seismic energy release, meanwhile, has remained "in the background levels "
PHIVOLCS noted that the volcano remains under Alert Level 2, which means it exhibits a "moderate level of unrest."
It said entry into the 6-kilometer radius Permanent Danger Zone should remain banned.
"DOST-PHIVOLCS maintains close monitoring of Mayon Volcano and any new development will be communicated to all concerned stakeholders," it said.
