Mayon Volcano emits ashPhivolcs said the ash emission occurred at 1:50 p.m. at the summit crater of the volcano. MANILA, Philippines — Mayon Volcano in Albay yesterday emitted ash, producing plumes that rose 1,000 meters, according to the Philippine Institute of Volcanology and Seismology. Phivolcs said the ash emission occurred at 1:50 p.m. at the summit crater of the volcano. State volcanologists said Mayon remains under Alert Level 3 or high level of unrest. Pilots have been warned against flying close to the volcano as ash emission can be hazardous to aircraft.