Taal Volcano shows increased seismic activity, RSAM up

Taal Volcano in Batangas province showed renewed seismic activity over the past 24 hours, according to a report by the Philippine Institute of Volcanology and Seismology (Phivolcs) on Sunday, July 6.

Two low-frequency volcanic earthquakes were recorded since July 1, marking an increase in real-time seismic energy measurement (RSAM) with continuous volcanic tremor but no observable degassing plume from the Main Crater.

Dr. Teresito Bacolcol of PHIVOLCS confirmed on Tuesday that RSAM readings have been increasing since July 6 and a volcanic tremor has persisted for more than two days, indicating potential pressurization within the volcano.

Continuous volcanic tremors may last several days and are triggered by magma or gas flow inside the volcano, while sulfur dioxide emissions measured at 377 tonnes on July 4 indicate ongoing activity.

Despite these warning signs, Taal Volcano remains under Alert Level 1, with a weak plume reaching up to 900 meters observed in the past 24 hours, and Pilots are advised to avoid flying close due to potential hazards from sudden explosions.

Entry into Taal Volcano Island (TVI), especially near the main crater or Daang Kastila Fissures, is prohibited to ensure public safety.