A minor phreatic or steam-driven eruption occurred at Taal Volcano at around 1:59 a.m. on Wednesday, Sept. 25, said the Philippine Institute of Volcanology and Seismology (Phivolcs).
Phivolcs reported that the active volcano in Batangas emitted a “voluminous” plume that rose 600 meters before drifting south-southwest and southwest.
Sulfur dioxide (SO2) emissions reached 4,899 tons on Sept. 23, while an upwelling of hot volcanic fluids in the Main Crater Lake continues to be observed.
Phivolcs reiterated that Alert Level 1 (low-level unrest) remains in effect for Taal Volcano, indicating abnormal conditions.
This alert level signifies the risks of sudden steam-driven or phreatic explosions, volcanic earthquakes, minor ashfall, and hazardous volcanic gas emissions, especially on Taal Volcano Island (TVI).
Phivolcs advised the public to avoid entering the TVI, particularly near the Main Crater and Daang Kastila fissure, which are considered permanent danger zones.
Local government units are also advised to monitor SO2 levels, assess their effects, and implement measures to mitigate these hazards.