(Eagle News) — Thirteen 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, were sulfur dioxide and steam emissions. PHIVOLCS said the emission of white steam-laden plumes was moderate. Sulfur dioxide emission was last measured at an average of 634 tons on January 27. PHIVOLCS said that while no magmatic eruption was imminent, Mayon remains at […]