LUCENA CITY — Taal Volcano in Batangas recorded six volcanic earthquakes and a single prolonged tremor in the past 24 hours, indicating a decline in seismic activity, the Philippine Institute of Volcanology and Seismology (Phivolcs) reported Tuesday, Sept. 1. In its latest bulletin, Phivolcs said the volcanic tremor lasted 420 minutes. Despite its duration, the
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