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DSWD DROMIC Report #17 on the Taal Volcano Eruption as of 21 July 2021, 6PM
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I. Situation Overview
On 01 July 2021 at 3:37 PM, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) has raised Alert Level 3 over Taal Volcano after a phreatomagmatic eruption from the main crater occurred at 3:16 PM.
As of 21 July 2021 at 8 AM, Alert Level 3 (Magmatic Unrest) now prevails over Taal Volcano. At Alert Level 3, magma extruding from the main crater could drive explosive eruption. The public is reminded that the entire Taal Volcano Island is a Permanent Danger Zone (PDZ), and entry into the island as well as into the high-risk barangays of Agoncillo and Laurel must be prohibited due to the hazards of pyroclastic density currents and volcanic tsunami should strong eruptions occur. 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
PHIVOLCS TAAL Volcano Bulletin 22 July 2021 8:00 AM
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In the past 24-hour period, the Taal Volcano Network recorded thirty-five (35) volcanic earthquakes, including seventeen (17) volcanic tremor events having durations of one (1) to forty-nine (49) minutes, eighteen (18) low-frequency volcanic earthquakes, and low-level background tremor that has persisted since 07 July 2021. High levels of volcanic sulfur dioxide or SO2 gas emissions and steam-rich plumes that rose nine hundred (900) meters before drifting east were generated from the Taal Main Crater. Sulfur dioxide (SO2) emission averaged 5,286 tonnes/day on 20 July 2021. Based on ground deformation parameters from electronic tilt, continuous GPS and InSAR monitoring, Taal Volcano Island has begun deflating in April 2021 while the Taal region continues to undergo very slow extension since 2020.
Published July 22, 2021 8:21am Taal Volcano had 35 volcanic earthquakes in the past 24 hours as Alert Level 3 remains in effect, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) said on Thursday. The quakes included 17 volcanic tremor events lasting one to 49 minutes, PHIVOLCS said in its bulletin. The volcano continues to emit high levels of volcanic sulfur dioxide (SO2) which reached an average of 5,286 tonnes on Saturday. From the main crater, steam-rich plumes rose up to 900 meters before these drifted north. PHIVOLCS said Taal Volcano Island continues to deflate since April this year, and the Taal region has been undergoing a very slow extension since last year.
PHIVOLCS TAAL Volcano Bulletin 21 July 2021 8:00 AM
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In the past 24-hour period, the Taal Volcano Network recorded ten (10) volcanic earthquakes, including three (3) volcanic tremor events having durations of two (2) to three (3) minutes, six (6) low-frequency volcanic earthquakes, and low-level background tremor that has persisted since 07 July 2021. High levels of volcanic sulfur dioxide or SO2 gas emissions and steam-rich plumes that rose nine hundred (900) meters before drifting east and northeast were generated from the Taal Main Crater. Sulfur dioxide (SO2) emission averaged 5,286 tonnes/day on 20 July 2021. Based on ground deformation parameters from electronic tilt, continuous GPS and InSAR monitoring, Taal Volcano Island has begun deflating in April 2021 while the Taal region continues to undergo very slow extension since 2020.