(Eagle News)–A 6.1-magnitude earthquake struck off Surigao del Sur on Monday, Sept. 21. The Philippine Institute of Volcanology and Seismology said the quake, which struck at 6:13 a.m, was followed by a 5.3-magnitude aftershock at 6:21 a.m. The 6.1-magnitude earthquake had its epicenter 66 kilometers northeast of Bayabas, while that of the 5.3-magnitude one was 93 kilometers northeast of the same. The depth of the first earthquake was 77 kilometers. The aftershock had a depth […]