By Mike Crismundo
BUTUAN CITY – Four mild tectonic earthquakes jolted Siargao island early Thursday morning, Nov. 29, 2018, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.
The series of earthquakes had created fear and awakened residents, particularly those residing along the coastal areas in Siargao, which faces the Pacific Ocean, including Surigao del Norte province in Northeastern Mindanao or Caraga region.
However, the municipal and provincial disaster risk reduction and management councils reported no damage or injury.
In its bulletin, Phivolcs said a 3.6 magnitude tremor was recorded at 2:52 a.m. on Thursday (Nov. 29).
The epicenter was plotted 41 kilometers (km) northeast of Burgos town, Siargao island, Surigao del Norte province. The earthquake had a depth of 16 km.
At 2:58 a.m. on the same day (Nov. 29), a 3.3 magnitude tremor was registered and its epicenter was traced 52 km northeast of that same town (Burgos) and province, the state agency said. The tremor had a shallow depth of only 6 km.
A magnitude 2.1 earthquake was also recorded at 3:52 a.m. on the same day (Nov. 29) and its epicenter was located 35 km northeast of that same town and island, with a depth of only 8 km, the state agency said.
Another 3.2 magnitude tremor was registered at 4:05 a.m. on the same day (Nov. 29) and its epicenter was pinpointed 18 km southeast of nearby General Luna town of that same island and province, with a depth of only 10 km, Phivolcs also said, in its latest bulletin.
The four tremors were tectonic in origin and no tsunami alert was raised by the state agency.
The rescue teams and personnel of the municipal and provincial disaster risk reduction and management councils were alerted by Surigao del Norte Gov. Sol F. Matugas following the series of mild earthquakes.