The Philippine Institute of Volcanology and Seismology (PHIVOLCS) places Mayon Volcano in Legazpi, Albay on Alert Level 1.
Phivolcs Region 5 Science Research Analyst Alex Baloloy says, this is due to the increase in the volcano’s sulfur dioxide emission.
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Baloloy notes, Mayon’s volume of gas emission has gone up from 500 tons a day to more than 1,000 tons a day.
He adds, this development can’t be seen with the naked eye and only monitoring instruments can detect the activity.
Baloloy is advising residents and tourists to avoid entering the volcano’s 6-kilometer permanent danger zone.
