(Eagle News) — Two volcanic earthquakes 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. It said sulfur dioxide emission was last measured at an average of 634 tons on January 27. PHIVOLCS said that while no magmatic eruption was imminent, at alert level 1, the volcano was at “an abnormal condition.” As such, […]