MANILA: A magnitude 5.4 earthquake hit Surigao del Sur on Friday afternoon. In a bulletin issued at 6:30 p.m., the Philippine Institute of Volcanology and Seismology (Phivolcs) said the tectonic quake struck 89 kilometers southeast of Cagwait at 5:28 p.m. It was 16 km deep. Intensity IV (moderately strong) was felt in Cagwait, and Intensity II (slightly felt) was reported in Bislig. Phivolcs also logged the following instrumental intensities: Intensity III (weak) - City of Tandag, Surigao del Sur Intensity II - Nabunturan, Davao de Oro Intensity I - San Francisco, Southern Leyte Reported intensity is the traditional way of knowing the intensity based on reports of people who felt the earthquake. Instrumental intensity, on the other hand, is measured using an intensity meter that measures ground acceleration. Meanwhile, Phivolcs said both aftershocks and damage are unlikely from the magnitude 5.4 quake. Source: Philippines News Agency
