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Magnitude 4.3 quake rattles Balut Island in Sarangani

A moderate earthquake centered off Balut Island in Sarangani province shook Southern Mindanao on Tuesday afternoon. The Philippine Institute of Volcanology and Seismology reported the tremors were felt across several towns in the region.

LSN Philippines · 19 August 2026

A magnitude 4.3 earthquake struck Balut Island in Sarangani province at 2:29 p.m. Tuesday, according to the Philippine Institute of Volcanology and Seismology (Phivolcs). The epicenter was located approximately 25 kilometers southwest of the island, placing it in an active seismic zone in the Mindanao region.

The tremors were reported felt across multiple towns in Southern Mindanao, though Phivolcs did not specify the extent of the impact or any immediate reports of damage. The agency issued its second earthquake bulletin on the incident, indicating continued monitoring of seismic activity in the area.

Balut Island, located off the coast of Sarangani, sits in a geologically active region of the Philippines where earthquakes are not uncommon. The moderate magnitude quake posed no immediate tsunami threat to coastal communities, based on standard assessment protocols for earthquakes of this size in the region.