Taal Volcano had a series of "weak" phreatomagmatic eruptions that occurred at 8:47 a.m., 9:15 a.m., 9:26 a.m., and 11:56 a.m. on Wednesday, July 7.
The Philippine Institute of Volcanology and Seismology (Phivolcs) said the event at 8:47 a.m. generated a 300-meter high plume.
The events recorded at 9:15 a.m. and 9:26 a.m. lasted two minutes and five minutes, respectively.
Phivolcs said the eruption at 11:56 a.m. generated a 200-meter high "dark gray" plume.
Phreatomagmatic eruption is caused by magma coming into contact with groundwater.
Taal Volcano also spewed a "grayish" plume that rose 300 meters above the main crater at around 5:18 a.m.
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Phivolcs said that Taal Volcano remains under Alert Level 3 due to continuous "magmatic unrest."
"At Alert Level 3, magma extruding from the Main Crater could drive explosive eruption," Phivolcs said.
The public is prohibited from entering the entire Taal Volcano Island, which is a permanent danger zone.
Phivolcs also advised those in the high-risk barangays of Agoncillo and Laurel in Batangas to evacuate due to hazards of pyroclastic density currents and volcanic tsunami in case strong eruptions occur.
"All activities on Taal Lake should not be allowed at this time," it added.
Communities around the Taal lakeshores were also advised to remain vigilant and take precautionary measures against possible airborne ash and vog.
Phivolcs asked residents around Taal Lake to "calmly" prepare for possible evacuation should Taal Volcano's unrest intensifies.