A magnitude 5.1 aftershock struck northern Cebu, the Philippine Institute of Volcanology and Seismology (Phivolcs) reported on Friday, October 3.
In its Facebook update, Phivolcs said the aftershock occurred at 5:39 a.m., with a magnitude of 5.1, located 18 kilometers northeast of Bogo City, Cebu, at a depth of 10 km.
The quake was felt with varying intensities across northern Cebu and nearby areas:
Intensity IV (moderately strong)
City of Bogo, Cebu
Villaba, Leyte
Tabango, Leyte
San Isidro, Leyte
This level is generally felt by people indoors and some outdoors, often causing windows to rattle and hanging objects to sway slightly.
Intensity III (weak)
Tabuelan, Cebu
Calubian, Leyte
Palompon, Leyte
This level is slightly weaker, but the tremor remains noticeable and may cause dizziness or nausea in some people.
Intensity II (slightly felt)
Argao, Cebu
This level is barely perceptible, usually felt only by a few people at rest indoors.
Instrumental intensities were also detected in other areas, particularly:
Intensity III
City of Cebu
Hilongos, Leyte
Ormoc City, Leyte
Intensity II
Kawayan, Biliran
Talibon, Bohol
Danao, Cebu
Asturias, Cebu
Lapu-lapu City, Cebu
Talisay, Cebu
Abuyog, Leyte
Leyte, Leyte
Hinunangan, Southern Leyte
The aftershock follows the magnitude 6.9 offshore earthquake that struck Cebu on Sept. 30. As of 4 a.m., Phivolcs reported 3,685 aftershocks. /mcm