The Philippine Institute of Volcanology and Seismology (Phivolcs) said Tuesday the seismic activity of Taal Volcano in Batangas province has increased in the past 24 hours.
Phivolcs Director Renato Solidum, Jr. said from 7 a.m. Monday to 7 a.m. Tuesday, the agency has recorded 10 volcanic quakes, which was notably higher compared to the "no volcanic activity" from Sunday to Monday.
Solidum said no steaming has been observed in the past 24 hours and water temperature at the main crater lake decreased from 31.7 to 30.9 degrees Celsius.
The Phivolcs chief noted the volcano's alert level 1 will be maintained as "10 volcanic quakes are still appropriate for a volcano that is under abnormal level."
He said that a volcano under alert level 1 means that abnormal volcanic activities are observed, though a hazardous eruption is not imminent.
Since Jan 18, Solidum said that Taal Volcano was relatively calm, with its seismic network recording "zero to eight" volcanic earthquakes in a day.
He noted that no other significant volcanic activity was also observed in the past four days.
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