Low-level volcanic unrest continued at Taal Volcano after two brief steam-driven eruptions were detected within a 24-hour observation period, according to the Philippine Institute of Volcanology and Seismology (Phivolcs).
Phivolcs said its monitoring from 12 a.m. on April 25 to 12 a.m. on April 26 recorded two phreatic eruptions that lasted between one and six minutes.
It also observed a voluminous plume from the main crater that drifted toward the southwest.
A phreatic eruption occurs when water comes into contact with hot volcanic materials such as rocks or gases. No magma is involved in this type of eruption, which produces only a steam plume.
During the same period, Phivolcs logged 25 volcanic earthquakes, including 23 volcanic tremors that lasted from one to 29 minutes.
State volcanologists maintained Alert Level 1 over Taal Volcano, which indicates abnormal activity but no sign of an imminent eruption.
However, it warned that sudden steam-driven explosions, volcanic earthquakes, minor ashfall, and hazardous gas buildup may still occur, particularly within the main crater area.
The agency reiterated that entry into Taal Volcano Island, including the main crater and the Daang Kastila fissure, remains strictly prohibited.
Taal Volcano has been under Alert Level 1 since November 12, 2025.
Alert Level 1 is the second-lowest in Phivolcs’ six-tier volcano alert system, indicating low-level volcanic unrest above normal conditions (Level 0).
