The discharge of lava flow from Mt. Mayon started to increase in mid July and on 4 August, lava flows extended 30 m beyond the 6-km radius region designated as the Permanent Danger Zone. The Philippine Institute of Volcanology and Seismology (PHIVOLCS) issued an official advisory on 7 August raising the alert level from 3 to 4. As of 13 August, PHIVOLCS reported that six explosions occurred at Mayon volcano during the previous 24 hours.
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