Fountains of glowing lava continued to burst through the crater from Mayon Volcano early Tuesday. Volcanologists earlier said the volcano could be on the verge of a violent eruption.
The Philippine Institute of Volcanology and Seismology had already declared alert level 4 on Mayon Volcano on Monday afternoon following an increase in seismic unrest, lava fountaining, and summit explosions.
Mayon Volcano started to spew lava past 9 p.m. on Monday that reached from 500 to 700 meters, based on time-series photos taken at the Mayon Volcano Observatory, Lignon Hill, Legazpi City in Albay province.
Another lava fountain was photographed by Phivolcs past 1 a.m. on Tuesday.
In a live report over Umagang Kay Ganda, Mayon Volcano continued to spew lava until 5 a.m.
Some 40,000 residents in Albay province have already been evacuated following fresh activity from the restive volcano.
Renowned for its near-perfect cone, Mayon Volcano is the most active among the volcanoes in the Philippines.
Its most destructive eruption was in Feb. 1841 that buried a town and killed 1,200 people, records from Phivolcs showed.
Mayon Volcano, Bulkang Mayon, Bandila DZMM, Albay, Legazpi, Al Francis Bichara, Phivolcs, Renato Solidum, Philippine Institute of Volcanology and Seismology, Umagang Kay Ganda, lava fountain