5.7 quake jolts Mindoro, Metro Manila

Also read latest May 23, 2011 earthquake story

A 5.7 magnitude earthquake struck off Lubang Island on Monday, about 11 hours after a feeble tremor hit off the coast of Mamburao, the Philippine Institute of Volcanology and Seimology.

There were no reports of dame or injuries from the quakes.

The second tremor occurred at 6:37 p.m., about 12 kilometers northeast of Lubang Island. It struck at an intermediate depth of 75 kilometers.

It was felt at intensity IV in Lubang, Occidental Mindoro; Puerto Galera and San Teodoro, in Oriental Mindoro; Batangas City; in the cities of Manila and Marikina; Bacoor, Cavite; Talisay, Batangas; and Tagaytay City.

Intensity III was registered in San Jose and Abra de Ilog, Occidental Mindoro; Calapan, Oriental Mindoro; Quezon City; Mandaluyong City; Makati City; Malabon City; Taguig City; Alabang; Dasmarinas, Cavite;; Malolos and Obando, Bulacan.

It was at Intensity II in Pateros; Navotas; Calamba and Binan, Laguna; Lucban, Quezon; Subic, Zambales; Clark, Pampanga; Plaridel, Bulacan; Tarlac City; Cabanatuan City, Nueva Ecija; and Baguio City.

The first earthquake was too weak to be felt. It struck at7:34 p.m. about 81 kilometers southwest of Mamburao. It occurred offshore at a shallow depth of 20 kilometers.

The Philippines sits on the Pacific Ring of Fire, where continental plates collide causing frequent seismic and volcanic activity.

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