A magnitude 6.1 earthquake rocked parts of Luzon at 5:11 p.m. yesterday.

The Philippine Institute of Volcanology and Seismology (Phivolcs) revised the magnitude upwards, after initially pegging the earthquake at magnitude 5.7.

In a bulletin, Phivolcs said the epicenter of the earthquake was located in Castillejos, Zambales.

The following intensities were recorded:

* Intensity V – San Felipe, Zambales; Malolos and Obando, Bulacan; Quezon City; Lipa, Batangas; City of Manila; Abucay, Bataan; Valenzuela City; Magalang, Pampanga

* Intensity IV – Pasig City; Makati City; Caloocan City; Meycauayan and San Jose del Monte, Bulacan; Floridablanca, Pampanga; Villasis, Pangasinan; Tagaytay City; Villasis, Pangasinan; Baguio City; Marikina City; Las Piñas City

* Intensity III – Dasmariñas, Indang, and General Trias, Cavite; Lucban, Quezon; Muntinlupa City; Cabanatuan City, Palayan City, Gapan City, Santo Domingo and Talavera, Nueva Ecija

* Intensity II – Baler, Aurora

Phivolcs warned that aftershocks and damage are expected. (Rappler.com)