MANILA - The Philippine Institute of Volcanology and Seismology on Monday monitored a light magmatic eruption in Mayon Volcano as thousands were evacuated along the path of the country's most active volcano.
Alert level 3 was raised on Sunday, meaning "there is always the tendency for a hazardous eruption," said Phivolcs director Renato Solidum. The highest warning, level 5, means an eruption is ongoing.
Authorities advised people to cover their noses and mouths with a damp, clean cloth or dust mask if they were exposed to ash from the eruptions, and said aircraft must avoid flying close to the volcano's summit.
Phivolcs chief Renato Solidum said the volcano appeared due for another major eruption as it has been displaying abnormal behaviour since late last year.
Mayon's most destructive eruption was in February 1841, when lava buried a town and killed 1,200 people. It last erupted in 2014, spewing lava and forcing thousands of people to evacuate.