Taal Volcano in Batangas remained restive as State seismologists detected 103 earthquakes in the past 24 hours.

Of the 103 quakes recorded, the Philippine Institute of Volcanology and Seismology (Phivolcs) said 21 were volcanic tremor events having durations of one to two minutes, 74 were low-frequency volcanic earthquakes, and eight were hybrid events and a low-level background tremor that has persisted since July 7.

The activity at the main crater was still dominated by the upwelling of hot volcanic fluids in its lake which generated plumes 1,200 meters tall, Phivolcs said.

Sulfur dioxide emission averaged 5,943 tons when it was last measured on Friday, Oct. 29.

"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.

Phivolc 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.

Phivolcs advised the concerned local government units to continuously assess and strengthen the preparedness of previously evacuated barangays around Taal Lake in case of renewed unrest.