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Monday, March 4, 2024

High-level unrest, eruption in Mayon likely—Phivolcs

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Mayon Volcano in Albay is currently in a relatively high level of unrest and hazardous eruption within weeks or even days could still be possible, according to the Philippine Institute of Volcanology and Seismology (Phivolcs).

In the past 24-hour period, a slow effusion of lava from the summit crater of Mayon Volcano continued to feed the established lava flows on the Bonga (southeastern), Mi-isi (south), and Basud (eastern) gullies, Phivolcs also said.

The lava flows maintained advances to approximately 3.4 kilometers, 2.8 kilometers, and 1.1 kilometers from the crater.

Rockfall and pyroclastic density currents or PDCs generated by collapses of the lava flow margins as well as of the summit dome deposited debris still within four kilometers of the crater.

The Mayon Volcano Network recorded a total of 221 volcanic earthquakes, including 111 tremor events lasting one to 28 minutes. Some of these tremors were accompanied by rumbling sounds audible within the seven-km radius from the crater of Mayon.

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It detected 152 rockfall events, three PDCs and three lava front-collapses. Volcanic sulfur dioxide (SO2) emission averaged 799 tons/day on 12 August 2023. Mayon Volcano is still generally inflated relative to baseline levels.

The Phivolcs meanwhile reported that a magnitude 5.4 earthquake was recorded on Sunday morning in the waters off Sabtang in Batanes.

The quake occurred at 9:43 a.m. with an epicenter at 20.46°N, 121.49°E – 042 km N 71° west of the municipality of Sabtang.Of tectonic origin, it had a depth of 48 kilometers.

Intensity 5 was felt in Sabtang in Batanes; intensity 4 was experienced in Basco, Mahatao, Ivana, and Uyugan in Batanes; and intensity 3 was felt in Itbayat, Batanes.

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