THE Philippine Institute of Volcanology and Seismology (Phivolcs) has monitored around 100 aftershocks following the magnitude 6.9 earthquake that struck Cebu on Tuesday night, September 30, 2025, at 9:59 p.m.
As of 4 a.m. on Wednesday, October 1, Phivolcs reported around 100 aftershocks in bulletins posted on its Facebook page.
The first significant aftershocks were recorded at 10:24 p.m. (magnitude 5.0) and 10:33 p.m. (magnitude 5.1), both shallow tremors near Bogo City. A magnitude 3.8 tremor was then logged near Tabogon at 10:39 p.m.
By midnight, more quakes followed, including a magnitude 4.4 at 11:59 p.m. and a stronger magnitude 4.9 at 12:34 a.m. on October 1.
Smaller aftershocks ranging from magnitude 1.5 to 3.8 were also recorded in succession, with depths varying from as shallow as two kilometers to as deep as 80 kilometers. (JJL)