Based on Phivolcs' latest bulletin, lava still flows from Mayon and collapsing debris toward the south portion of Mi-isi and the southeastern side of Bonga gullies are still observed.
Phivolcs said nine dome-collapse pyroclastic density currents (PDC) for at least two to four minutes; 280 rockfall events; and two volcanic earthquakes were recorded by the Mayon Volcano Network.
An alert level 3 remained hoisted over Mayon Volcano.
Mayon continues 'very slow' effusion of lava, stays under alert level 3
Jun 17, 2023 05:50 AM
At a glance
The Philippine Institute of Volcanology and Seismology (Phivolcs) on Saturday, June 19, reported that "very slow" lava continues to flow in Mayon where an alert level 3 remained hoisted in the areas of Permanent Danger Zone (PDZ).
(Photo credit to ALI VICOY/MANILA BULLETIN)
In its latest bulletin, Phivolcs said lava continues to flow from Mayon and collapsing debris toward the south portion of Mi-isi and the southeastern side of Bonga gullies are observed.
"The lava flows have advanced to maximum lengths of one thousand five hundred meters from the summit crater while collapse debris have deposited to three thousand three hundred meters from the crater," Phivolcs stated.
Rockfalls, volcanic earthquakes
In the latest report, Phivolcs recorded nine dome-collapse pyroclastic density currents (PDC) for at least two to four minutes; 280 rockfall events; and two volcanic earthquakes were recorded by the Mayon Volcano Network.
Phivolcs said the Mayon "continuous moderate degassing from the summit crater produced steam-laden plumes that rose 100 m before drifting to the general west."
On June 16, Phivolcs monitored 978 tons of Sulfur dioxide (SO2) emission averaged daily, where it increased from 826 tons per day last June 15.
Relatively 'high level' unrest
An alert level 3 remained hoisted over Mayon Volcano, where "currently in a relatively high level of unrest as magma is at the crater and hazardous eruption within weeks or even days is possible," Phivolcs stated.
Due to the danger of PDCs, lava flows, rockfalls, and other volcanic hazards, Phivolcs recommended evacuation within the area under a six-kilometer radius PDZ.
Phivolcs warned the public of the danger of PDCs, lahars, and sediment-laden streamflows along channels draining the edifice.
It also stated that "heavy rainfalls could generate channel-confined lahars and sediment-laden streamflows in channels where PDC deposits were emplaced."
At the same time, the Civil Aviation Authority of the Philippines (CAAP) warned pilots "to avoid flying close to the volcano's summit as ash from any sudden eruption can be hazardous to aircraft."
Meanwhile, ash fall events are "most likely" on the volcano's south side, based on the prevailing wind pattern. (Sonny Daanoy)