A small phreatic eruption event was reported in Taal Volcano in Batangas on Sunday, according to the Philippine Institute of Volcanology and Seismology (PHIVOLCS) on Monday.
In its bulletin, PHIVOLCS said the phreatic eruption lasted for a minute.
Phreatic eruptions are steam-driven explosions that occur when water beneath the ground or on the surface is heated by magma, lava, hot rocks, or new volcanic deposits, PHIVOLCS said.
A moderate emission of plumes of up to 900 meters tall was observed from the volcano, which drifted to the southwest direction.
Taal Volcano emitted 2,068 tons of sulfur dioxide gas on Saturday and an upwelling of hot volcanic fluids was monitored in its Main Crater Lake.
A long-term deflation of the Taal Caldera and a short-term inflation of the general northern and southeastern flanks of the Taal Volcano Island were also observed.
No volcanic earthquake was recorded in Taal Volcano.
Alert Level 1 is maintained over the volcano, which means the volcano is still in abnormal condition and should not be interpreted to have ceased unrest nor ceased the threat of eruptive activity.
The possible hazards under Alert Level 1 are sudden steam-driven or phreatic explosions, volcanic earthquakes, minor ashfall and lethal accumulations or expulsions of volcanic gas.
People are prohibited from entering the Taal Volcano Island, permanent danger zone or PDZ, especially the vicinity of the Main Crater and the Daang Kastila fissure.
Flying close to the volcano is also prohibited. —Joviland Rita/KG, GMA Integrated News
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