People on TV said the earthqualke was felt in the eastern sections of Samar, Leyte, the Bicol provinces and Eastern Mindanao.
Not surprisingly, the earthquake, says the news, originated from the Philippine Trench.
The Philippine Trench (also known as the Manila Trench) is a deep underwater trench that is caused by the collision of two tectonic plates (the Philippine Sea Plate and the Eurasian Plate) east of the Luzon island of the Philippines. The Eurasian Plate is subducting underneath the Philippine Sea Plate at a rate of approx. 16 cm/year. This tectonic activity causes most of the volcanic activity on Luzon, including the cataclysmic eruption of Mt. Pinatubo in 1991.Read more: from wiki
And then there was the expected tsunami which definitely affect the coastal towns of the affected provinces particularly those facing the Pacific Ocean .. disaster preparedness is up to the test.. again..
According to wikipedia, the last Philippine Trench tsunami occurred in January 11, 1693, more than 500 years ago, and was instigated by a 7.6 earthquake and measured .06 meters when it reached land..