Mayon volcano, Luzon Island, Philippines: news & activity updates

On 28 October PHIVOLCS warned of potential lahars around Mayon due to intense rains from an impending tropical storm. The rains could generate lahars in several drainages, including in the Miisi, Binaan, Anoling, Quirangay, Maninila, Masarawag, Muladbucad, Nasisi, Mabinit, Matan-ag, and Basud. Communities along the middle and lower flanks and in areas downstream were vulnerable to lahars. Read allPHIVOLCS reported that white steam plumes from Mayon rose no higher than 500 m above the summit and drifted E. Sulfur dioxide emissions averaged 301 tonnes per day on 12 October. One volcanic earthquake was detected during 16-17 October. Read all PHIVOLCS reported that since the Alert Level for Mayon was raised to 1 (on a 0-5 scale) on 21 August monitoring data had showed nothing notable. Changes in morphology of the dome and minor aseismic extrusion estimated at about 40,000 cubic meters was detected during 6 June-20 August based on daily visual and camera monitoring data. Based on these observations, the lava dome grew an additional 48,000 cubic meters by 4 October; re-mobilized light-colored ash had been deposited in Miisi Gully (S flank) beginning 2 October, likely derived from lava fragmentation during the extrusion process. Read allThe PHIVOLCS volcano observatory issued in their recent bulletin to rise the alert level for the volcano to Level 2 as an elevated seismic unrest at the volcano has been registered. Read all PHIVOLCS reported that since the Alert Level for Mayon was raised to 1 (on a 0-5 scale) on 21 August monitoring data had showed nothing notable. Changes in morphology of the dome and minor aseismic extrusion estimated at about 40,000 cubic meters was detected during 6 June-20 August based on daily visual and camera monitoring data. Based on these observations, the lava dome grew an additional 48,000 cubic meters by 4 October; re-mobilized light-colored ash had been deposited in Miisi Gully (S flank) beginning 2 October, likely derived from lava fragmentation during the extrusion process. Read allOn 21 August PHIVOLCS raised the Alert Level for Mayon to 1 (on a 0-5 scale) noting changes at the summit lava dome that was emplaced in 2018. Changes in morphology of the dome and minor extrusion estimated at about 40,000 cubic meters was detected during 6 June-20 August based on daily visual and camera monitoring data. Minor inflation, particularly on the NW and SE flanks, had been recorded since April. Read allThe PHIVOLCS volcano observatory issued a report about a slightly elevated activity at the volcano. Read allOn 21 August PHIVOLCS raised the Alert Level for Mayon to 1 (on a 0-5 scale) noting changes at the summit lava dome that was emplaced in 2018. Changes in morphology of the dome and minor extrusion estimated at about 40,000 cubic meters was detected during 6 June-20 August based on daily visual and camera monitoring data. Minor inflation, particularly on the NW and SE flanks, had been recorded since April. Read all