The Philippine Institute of Volcanology and Seismology (Phivolcs) on Monday, Dec. 16 warned of elevated sulfur dioxide (SO2) emissions from Taal Volcano, as they pose potential health risks to nearby communities.

The volcano released 8,322 tons of SO2, above its annual average of 6,057 tons.

Although no volcanic smog or volcanic fog (vog) has been detected due to moderate winds dispersing the gases, Phivolcs still advised caution, particularly for those in nearby communities.

The emissions of SO2 continue to pose potential health risks, especially to sensitive individuals, such as those with respiratory conditions (asthma, lung disease), the elderly, children, and pregnant women.

Prolonged exposure to volcanic SO2 can irritate the eyes, throat, and respiratory system.

To minimize these health risks, Phivolcs urged people to limit outdoor activities, stay indoors, and close windows and doors to prevent the gas from entering their homes.

The agency also recommended wearing an N95 mask to cover the nose and mouth and drinking plenty of water to reduce throat irritation.

Phivolcs reminded the public that Taal Volcano remains under Alert Level 1, meaning the volcano is still in an abnormal state with ongoing risks of minor eruptions, volcanic earthquakes, and further gas emissions.

At this level, Phivolcs pointed out that sudden steam-driven or phreatic eruptions could occur, potentially affecting areas within the Taal Volcano Island (TVI) and the surrounding caldera.

Local government units are urged to closely monitor the situation and take appropriate actions to safeguard the public, particularly regarding SO2 exposure.

Authorities are also reminded that entry into Taal’s permanent danger zone, especially the Main Crater and Daang Kastila fissure, remains strictly prohibited.