Mayon volcano (Luzon Island, Philippines): Volcanic Alert Level lowered to 1
Fri, 17 Jul 2020, 09:0109:01 AM | BY: MARTIN
PHIVOLCS reported that Volcanic Alert Level lowered from level 2 to level 1 as the volcano has been continued to decline in the monitored parameters since 29 March 2018.
Mayon volcano from satellite (image: Sentinel 2)
During the past six months the seismic activity has declined to 1 volcano-tectonic earthquake per day in average associated with rock fracturing within the volcano edifice. Rockfall were associated with heavy rainfalls or extreme winds over the volcano rather than lava extrusion. There is no signs of flux of magma rising within the volcano.
Sulfur dioxide (SO2) emissions were measured to a 300-700 tonnes/day in average since Jan 2020. On 30 June a sulfur dioxide (SO2) emissions reached to a 229 tonnes/day. The relatively low levels of SO2 flux indicate that passive degassing of stalled magma beneath the edifice has been transpiring.
Emissions of gas and steam plumes has ranged from weak to moderate. Incandescence is visible from the summit crater. The faint crater glow and stable lava dome are consistent with the presence of remnant magma from the 2018 eruption and the absence of magma re-supply to the shallow levels of the edifice.
Recent electronic tilt data showed inflation of the middle to upper portions of the volcanic edifice that began in the last quarter of 2019.
The warning bulletin states that ballistic impacts of volcanic bombs and pyroclastic flows could affect an area of about 6 km distance from the main crater.
Source: Phillippine Institute of Volcanology and Seismology volcano activity update 17 July 2020
Thu, 21 May 2020, 07:45
No significant change in activity has occurred during the past days. ... Read all
Sun, 19 Apr 2020, 06:52
Mayon Volcano's seismic monitoring network recorded 3 rockfall related events over the past 24-hours. Steam plume emissions drifted west and west-northwest. Faint crater glow from the summit could be observed at night. Sulfur dioxide (SO2) emissions was measured at an average of 176 tonnes/day on 17 April 2020. Inflation of the middle to upper portions of the volcanic edifice that began in the last quarter of 2019 continues. ... Read all