MANILA (Updated) -- A massive magnitude 7.2 earthquake struck off the coast of Sarangani, Davao Occidental, Saturday dawn, prompting a brief tsunami warning for the coast of provinces fronting Celebes Sea.
The Philippine Institute of Volcanology and Seismology (Phivolcs) said the quake, which hit at 4:23 a.m., was centered 53 kilometers southwest of Sarangani, at a depth of 57 kilometers. It was tectonic in origin.
Phivolcs issued a tsunami warning for the coastlines of Sarangani, Davao Occidental, South Cotabato, Davao Oriental and Sultan Kudarat then lifted it about two hours later.
It had earlier urged those living near the shores to "stay away from the beach and not to go to the coast" for at least an hour after the tremor.
In an advisory, Phivolcs confirmed the Sarangani sea level monitoring station showed a drop of approximately 30 centimeters and a maximum rise of approximately 10 centimeters wave height relative to normal sea level.