BUTUAN CITY – After a powerful 5-8 magnitude earthquake struck Surigao del Sur province early Tuesday morning, three successive mild tremors were registered in the same town later in the day.
In its bulletin, Philippines Institute of Volcanology and Seismology (Phivolcs) said a 3.5-magnitude temblor was registered at 4:53 a.m., Tuesday.
The epicenter was plotted 19 kilometers southeast of Bayabas town, Surigao del Sur province.
The tremor had a depth of 25 kms, Phivolcs said, in its latest bulletin.
Earlier, a 3.5-magnitude tremor was also recorded at 4:45 a.m., and its epicenter was traced only five kms. away from the same town and province, with a depth of 30 kms, it said.
At 4:41 a.m. on the same day, a 3.5-magnitude earthquake was also registered and its epicenter was located in the same spot, with a depth of 21 kms, it also said.
The three tremors were also tectonic in origin and no tsunami alert was raised by the state agency.
Phivolcs still expecting aftershocks, a result of the earlier 5.8 magnitude that struck at 1:32 a.m. on the same day.
The Surigao del Sur provincial disaster risk reduction and management council there also reported no damage or injury, but power interruption was noted in some parts of the region.
However, the electric power has since returned in all parts of the region.