Taal volcano (Philiippines): unrest continues at the volcano, threat of sudden explosions remains

Wed, 24 Mar 2021, 18:25
18:25 PM | BY: T
Volcanic-seismic unrest at the volcano is at elevated levels. During the latest 24 hours reporting window, the volcano observatory recorded 259 volcanic earthquakes, including 236 episodes of volcanic tremor of up to 22 minutes duration.
These indicate elevated fluid movements of gas, water and possibly magma under the surface. A sudden steam-driven explosion or new eruption could occur with little to no warning.

From the latest bulletin of PHIVOLCS:
At the surface, the activity at the Main Crater consisted of weak emission of steam plumes from fumaroles that rose 10 meters. Sulfur dioxide (SO2) emissions averaged 813 tonnes/day. Temperature of the crater lake reached highs of 71.8°C and pH of 1.59 on 04 March and 12 February 2021. Ground deformation parameters from electronic tilt, continuous GPS and InSAR data analysis indicated a very slow and steady inflation and expansion of the Taal region since after the January 2020 eruption. These parameters may indicate increased magmatic activity at shallow depths beneath the edifice.
Alert Level 2 (Increased Unrest) is maintained over Taal Volcano. DOST-PHIVOLCS reminds the public that at Alert Level 2, sudden steam-driven or phreatic explosions, volcanic earthquakes, minor ashfall, and lethal accumulations or expulsions of volcanic gas can occur and threaten areas within the Taal Volcano Island (TVI).
DOST-PHIVOLCS strongly recommends that entry into TVI, Taal's Permanent Danger Zone or PDZ, especially the vicinities of the Main Crater and the Daang Kastila fissure, must remain strictly prohibited. Local government units are advised to continuously assess and strengthen the preparedness of previously evacuated barangays around Taal Lake in case of renewed unrest. Civil aviation authorities must advise pilots to avoid flying close to the volcano as airborne ash and ballistic fragments from sudden explosions and wind-remobilized ash may pose hazards to aircraft. DOST-PHIVOLCS is closely monitoring Taal Volcano's activity and any new significant development will be immediately communicated to all stakeholders.

Previous news

Wed, 17 Mar 2021, 19:04
No significant change in Taal's volcanic activity has been observed during the past days. Read all
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