The Philippine Institute of Volcanology and Seismology (Phivolcs) has warned that aftershocks may follow the magnitude 6.5 earthquake that struck off Mati in Davao Oriental early on Saturday. The agency however discounted the occurrence of a tsunami.
“Aftershocks are expected given the earthquake’s magnitude,” Hermes Daquipa, Phivolcs research specialist, said.
Not all aftershocks will be felt but communities concernedshould be alert and prepare for these accordingly, he noted.
According to Phivolcs, the 6:53 a.m., offshore earthquake of tectonic origin struck 41 kilometers south, 40 degrees east of Mati. It has 42 kilometers depth.
“There’s no possibility for a tsunami,” Daquipa said.
He noted that the plate movement that resulted in the earthquake was horizontal, thus the occurrence of tsunamis from this event is far-fetched.
Phivolcs reported that Mati and Davao City felt the earthquake at intensity 5 while General Santos City, Alabel, Glan and Malapatan in Sarangani as well as Polomolok in South Cotabato felt the tremor at intensity 4.
Tupi in South Cotabato and Cagayan de Oro City felt the earthquake at intensity 3, Phivolcs added.
Power supply in most areas of the provinces affected by the tremor was also cut off on Saturday.