Phivolcs downgrades Bulusan Volcano alert to Level 0

The Philippine Institute of Volcanology and Seismology (Phivolcs) has downgraded the alert status of Bulusan Volcano in Sorsogon to Alert Level 0, indicating normal conditions.

According to Phivolcs, monitoring parameters have returned to baseline levels since late August, with volcanic earthquakes declining to 0-5 per day and sulfur dioxide emissions remaining low at an average of 76 tonnes per day since October 2023.

Most monitored springs have shown decreases in acidity, temperature, and diffuse carbon dioxide, indicating no significant input from deep magma sources.

While the alert status has been lowered, Phivolcs emphasized that entry into the 4-kilometer radius Permanent Danger Zone should still be avoided due to potential hazards from sudden steam-driven eruptions, rockfall, and landslides.

Local government units are advised to restrict access to areas near the vents on Bulusan Volcano's south-southeastern slopes, as sediment-laden streams and lahars could occur during prolonged rainfall.