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Manila Bulletin devider Philippines devider National devider Minor phreatic eruption occurs at Taal Volcano on September 11

Minor phreatic eruption occurs at Taal Volcano on September 11

Published Sep 11, 2025 06:15 pm
Taal Volcano had a phreatic eruption on Thursday, September 11, 2025 (Screenshot from Phivolcs Facebook page)
Taal Volcano had a phreatic eruption on Thursday, September 11, 2025 (Screenshot from Phivolcs Facebook page)
A minor steam-driven or phreatic eruption occurred at the summit crater of Taal Volcano at around 4:33 p.m. on Thursday, Sept. 11, said the Philippine Institute of Volcanology and Seismology (Phivolcs).
The event, which produced a white steam-laden plumes that rose about 300 meters above the crater, comes amid ongoing low-level unrest (Alert Level 1) at the volcano.
Phreatic explosions are caused by the interaction of water with hot volcanic materials such as rocks or gases
In the past 24 hours, nine volcanic earthquakes were recorded, including six volcanic tremor events, one of which was a continuous tremor that began at 6:53 a.m. on Sept. 10, and is still ongoing as of this report.
In addition, Phivolcs reported sulfur dioxide emissions averaging 1,749 tons per day on Sept. 9, indicating continued degassing activity from the main crater.
Despite the eruption and seismic activity, Alert Level 1 remains in effect over Taal Volcano, signifying abnormal conditions but no imminent eruption.
Phivolcs that sudden steam-driven or phreatic explosions, volcanic earthquakes, minor ashfall, and lethal accumulations of volcanic gases can still occur in the Main Crater area.
The public is strongly advised against entering Taal Volcano Island, especially the Main Crater and Daang Kastila fissure, due to the risk of sudden hazardous events.
Communities surrounding the lake are also urged to remain vigilant and follow guidance from local authorities and emergency services.

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PHIVOLCS TAAL VOLCANO PHREATIC ERUPTION LOW-LEVEL UNREST
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