(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  the emission of sulfur dioxide. PHIVOLCS said the last measured emission was at  143 tons on  October 10. It said this was “below baseline average.” An inflation of the lower to middle slopes since July 2019, and an inflation from late 2019 to mid-2020 […]