Mild earthquakes shook the provinces of Davao Oriental and Surigao del Norte on Tuesday morning, according to the Philippine Institute of Volcanology and Seismology (Phivolcs)
In its bulletin, Phivolcs said the first quake with a magnitude of 3.7 occurred at 12:32 a.m.
The epicenter of the quake was traced some 81 kilometers southeast of Tarrangona in Davao Oriental.
The quake, which was tectonic in origin, had a depth of 66 kilometers.
The second quake with a magnitude 4.1 occurred around 5:51 a.m. with epicenter traced some 18 kilometers northeast of General Luna in Surigao del Norte.
The quake, which was also tectonic in origin, had a depth of 15 kilometers.
On the other hand, the third tremor with a magnitude of 3.4 happened at 5:55 a.m. and its epicenter was estimated 25 kilometers northeast of General Luna in Surigao Del Norte.
Phivolcs said the temblor, which was tectonic in origin, had a shallow depth of 11 kilometers.
There was no casualty or damage reported from the three tremors and no aftershocks are expected from these quakes.
The Philippines lies on the Pacific Ring of Fire, where 20 to 25 earthquakes per day — mostly imperceptible — are common, Phivolcs said. PNA