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After the phreatomagmatic eruption of the Main Crater at 07:22 AM to 08:59 AM yesterday (26 March 2022), two (2) subsequent phreatomagmatic events at 4:34 AM and 5:04 AM today have been recorded by the Taal Volcano Network or TVN based on seismic records and visual cameras. These events produced 800 meter- and 400-meter-tall plumes, respectively, from the Main Crater that drifted southwest.

 

In the past 24-hour period, the TVN recorded fourteen (14) volcanic earthquakes, including ten (10) volcanic tremor events having durations of two (2) to three (3) minutes, and four (4) low-frequency volcanic earthquakes.  Activity at the Main Crater was dominated by upwelling of hot volcanic fluids in its lake which generated plumes 1,000 meters tall that drifted southwest. Sulfur dioxide (SO2) emission averaged 6,957 tonnes/day on 25 March 2022. Temperature highs of 63.7°C were last measured from the Main Crater Lake on 25 February 2022. Based on ground deformation parameters from electronic tilt, continuous GPS, and InSAR monitoring, Taal Volcano Island and the Taal region has begun deflating in October 2021.

 

The Alert Level 3 (Magmatic Unrest) prevails over Taal Volcano. This means that there is a magmatic intrusion at the Main Crater that may further drive succeeding eruptions. DOST-PHIVOLCS strongly recommends Taal Volcano Island and high-risk barangays of Bilibinwang and Banyaga, Agoncillo and Boso-boso, Gulod and eastern Bugaan East, Laurel, Batangas Province be evacuated due to the possible hazards of pyroclastic density currents and volcanic tsunami should stronger eruptions subsequently occur. The public is reminded that the entire Taal Volcano Island is a Permanent Danger Zone (PDZ), and entry into the island as well as high-risk barangays of Agoncillo and Laurel must be prohibited. All activities on Taal Lake should not be allowed at this time. Communities around the Taal Lake shores are advised to remain vigilant, take precautionary measures against possible airborne ash and vog and calmly prepare for possible evacuation should unrest intensify. Civil aviation authorities must advise pilots to avoid flying over Taal Volcano Island as airborne ash and ballistic fragments from sudden explosions and pyroclastic density currents such as base surges may pose hazards to aircraft. DOST-PHIVOLCS maintains its close monitoring of Taal Volcano and any new development will be communicated to all concerned stakeholders.

 

DOST-PHIVOLCS