Ongoing Volcanic Earthquakes at Taal Volcano
LUCENA CITY — Volcanic earthquakes and tremors at Taal Volcano continue to be closely monitored as activity remains elevated in Batangas province, officials reported on Saturday, August 16. The Philippine Institute of Volcanology and Seismology (Phivolcs) recorded several volcanic earthquakes and tremors over recent days, signaling persistent unrest beneath the volcano.
Within the past 24 hours, six volcanic tremors lasting between 36 to 138 minutes were detected, community members said. This ongoing seismic activity highlights the volcano’s dynamic state and the importance of vigilant observation.
Recent Seismic Activity Patterns
On August 14, state volcanologists noted nine volcanic earthquakes and two tremors. The day before, August 13, saw a spike with 41 earthquakes accompanied by 40 tremors, local leaders noted. From August 9 to 12, a total of 19 volcanic earthquakes and 21 tremors were logged, indicating fluctuating but consistent volcanic unrest.
Earlier in August, between the 1st and 9th, only four volcanic earthquakes and a single tremor were recorded, illustrating that the frequency of seismic events has increased recently, sources said.
Understanding Volcanic Earthquakes and Tremors
Phivolcs defines volcanic earthquakes as seismic events generated by magma or magmatic processes beneath or near an active volcano. These earthquakes often signal magma movement or other geological shifts underground.
Volcanic tremors differ as they are continuous seismic signals with low frequencies, typically lasting more than a minute. The agency explained that these tremors can result from magma or volcanic gas flowing through cracks, resonance effects, overlapping low-frequency earthquakes, or magma eruptions.
Latest Emission and Environmental Observations
In the latest update, the agency reported an emission of 292 metric tons of sulfur dioxide (SO2) from Taal’s main crater. However, no upwelling of hot volcanic fluids was observed in the Main Crater Lake on Taal Volcano Island, locally known as “Pulo,” situated at the center of Taal Lake, officials reported.
Furthermore, the absence of “vog,” or volcanic smog, was noted during recent observations, indicating no immediate hazardous gas accumulation in the surrounding environment.
Current Alert Level and Safety Precautions
Phivolcs reminded the public that Alert Level 1 remains in effect for Taal Volcano. This level indicates an abnormal condition, but it should not be mistaken as a cessation of volcanic unrest or the threat of eruption, community members emphasized.
At Alert Level 1, sudden steam-driven or minor phreatic eruptions, volcanic earthquakes, minor ashfall, and dangerous volcanic gas emissions can still occur. These hazards pose risks to areas within Taal Volcano Island.
Authorities continue to prohibit entry to Taal Volcano Island, boating activities on Taal Lake, and flying aircraft near the volcano to ensure public safety. Residents and visitors are urged to follow these restrictions strictly.
For more news and updates on Taal Volcano volcanic earthquakes, visit Filipinokami.com.
