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Taal Volcano activity has 'generally waned' but explosive eruption still possible

Patricia Lourdes Viray - Philstar.com
Taal Volcano activity has 'generally waned' but explosive eruption still possible
In this Jan. 13 2020 photo, Taal Volcano continues to erupt ash plumes.
The STAR / Miguel de Guzman

MANILA, Philippines — Activity of Taal Volcano has "generally waned" in the past 24 hours but Alert Level 4 is still raised over the volcano in Batangas province, the Philippine Institute of Volcanology and Seismology said Thursday morning.

The crisis level in effect over the volcano indicates that hazardous explosive eruption is possible within hours to days.

In its 8 a.m. bulletin, Phivolcs said the volcano emitted short-lived dark gray plumes 500 meters high at 6:17 a.m. and another one that reach 800 meters high at 6:21 a.m. This eruption dispersed ash southwest to west of the main crater.

"Activity in the past 24 hours has generally waned to weak emission of steam-laden plumes 700 meters high that dispersed ash to the southwest," Phivolcs said.

Since 1 p.m. on Sunday, Phivolcs has recorded a total of 566 volcanic earthquakes, 172 of which registered magnitudes 1.2 to 4.1 and were felt at Intensities I to V.

Since 5 p.m. on Wednesday until 5 a.m. Thursday, the seismic network plotted 103 volcanic earthquakes, 14 of which had magnitudes 1.4 to 4 and were felt at Intensities I to III.

"Such intense seismic activity likely signifies continuous magmatic intrusion beneath the Taal edifice, which may lead to further eruptive activity," Phivolcs said.

As of Wednesday, sulfur dioxide emission from the volcano was measured at an average of 4,186 tonnes/day.

Phivolcs reiterated its call for total evacuation of Taal Volcano Island, as well as high-risk areas within the 14-kilometer radius from the main crater and along the Pansipit River Valley where fissuring has been observed.

"Residents around Taal Volcano are advised to guard against the effects of heavy and prolonged ashfall," Phivolcs said.

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PHIVOLCS

TAAL VOLCANO

TAAL VOLCANO ERUPTION 2020

As It Happens
LATEST UPDATE: October 12, 2023 - 6:26pm

Get updates as Phivolcs issues warnings over activity in Taal Volcano. (Main photo by Philstar.com/Rosette Adel)

October 12, 2023 - 6:26pm

The Philippine Institute of Volcanology and Seismology issues a notice reporting an increased and continuous degassing activity from Taal Volcano.

In its 6 p.m. advisory, Phivolcs says the sulfur dioxide emission from the main crater reached 9762 tonnes per day. This was the higher recorded this year.

Phivolcs adds that there was no smog or vog observed. — Rosette Adel

October 11, 2023 - 5:21pm

The Philippine Institute of Volcanology and Seismology says Taal Volcano is still under Alert Level 1.

In an update on Wednesday, its says that the daily sulfur dioxide emissions (SO2) reached 2887 tonnes / day (06 October 2023).

Phivolcs also observes upwelling of hot volcanic fluids in the Main Crater Lake. — Rosette Adel

October 9, 2023 - 4:12pm

The Philippine Institute of Volcanology and Seismology reports that Taal Volcano's daily sulfur dioxide emissions (SO2) reached 2887 tonnes.

It observes upwelling of hot volcanic fluids in the Main Crater Lake as well as volcanic smog or vog.

The volcano's emissions are also 2400 meters tall. — Rosette Adel

October 8, 2023 - 4:04pm

The Philippine Institute of Volcanology and Seismology releases time-lapse snapshots of degassing activity from the Taal Main Crater and volcanic smog or vog formation on Sunday.

These were taken from 5:45 a.m. to 11:42 a.m. by the Mt. Macolot, Cuenca, Batangas station (VTCU) IP Camera.

— Rosette Adel

September 26, 2023 - 12:28pm

The Philippine Institute of Volcanology and Seismology records daily sulfur dioxide emissions that reached 2730 tonnes / day (22 September 2023).

It also observes upwelling of hot volcanic fluids in the Main Crater Lake and observed VOG.

Phivolcs adds that there is a ong-term deflation of the Taal Caldera; short-term inflation of the northern flanks of the Taal Volcano Island.

 

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