A tectonic earthquake of magnitude 5.4 struck 12 kilometers northeast of San Marcelino in Zambales at 10:27 p.m. on Thursday, according to the Philippine Institute of Volcanology and Seismology (Phivolcs).  The tremor, which Phivolcs recorded at a depth of 88 km. and earlier recorded as magnitude-5.5, was felt in parts of Metro Manila, Bulacan, Cavite,

Pampanga, Bataan, and Benguet.  The quake was felt for at least 6 seconds in Makati, where the Inquirer office is located. According to Tom Simborio, Phivolcs science research assistant, who was interviewed over radio station DZMM, the quake was felt at the following intensities: READ MORE