Mayon nears explosive phase, warns Phivolcs

LIGAO CITY, ALBAY, Philippines — A record surge in sulfur dioxide (SO2) emissions from Mayon Volcano has raised the possibility of a more explosive eruption, the Philippine Institute of Volcanology and Seismology (Phivolcs) warned on Saturday.

Mayon emitted an average of 13,128 metric tons of volcanic SO2 per day on July 11, based on campaign ...