A total of 111 volcanic earthquakes were recorded at Taal Volcano in the past 24 hours, the Philippine Institute of Volcanology and Seismology (Phivolcs) said Tuesday, Nov. 9.

Of the total number of quakes, 26 were volcanic tremor events having durations of one to two minutes, 85 were low-frequency earthquakes, and low-level background tremor that has persisted since July 7.

Phivolcs said the activity at the main crater was still dominated by the upwelling of hot volcanic fluids in its lake which generated a plume 1,500 meters tall that drifted southwest.

Taal Volcano's sulfur dioxide (SO2) emission averaged 11,435 tons when it was last measured on Nov. 8.

Its peak emission occurred on Oct. 5 with 25,456 tons of SO2.

"Based on ground deformation parameters from electronic tilt, continuous GPS and InSAR monitoring, Taal Volcano Island has begun inflating in August 2021 while the Taal region continues to undergo very slow extension since 2020," Phivolcs pointed out.

Phivolcs reminded the public that Taal Volcano remains under Alert Level 2, which means that the volcano continues to manifest "increased unrest."

"At Alert Level 2, sudden steam- or gas-driven explosions, volcanic earthquakes, minor ashfall, and lethal accumulations or expulsions of volcanic gas can occur and threaten areas within and around TVI," it pointed out.

The volcano has been under Alert Level 2 since July 23, 2021.

Phivolcs reiterated that entry into the Taal Volcano Island, which is a permanent danger zone, especially the vicinities of the main crater and the Daang Kastila fissure, is strictly prohibited.

Boating on Taal Lake is also be prohibited, it added.