(Eagle News) — Three rockfall events were 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, was sulfur dioxide emission. The emission was last measured at an average of 634 tons on January 27, PHIVOLCS said. Both inflation and deflation were recorded in different sectors of the volcano. PHIVOLCS reminded the public that while no magmatic eruption was imminent, […]