MANILA, June 11, 2026 — A magnitude 5.3 aftershock was recorded south-southwest of Balut Island in Davao Occidental on Thursday afternoon, producing weak shaking in parts of South Cotabato and Sarangani, according to the Philippine Institute of Volcanology and Seismology (PHIVOLCS-DOST). No damage is expected from the event.
What Happened and Where
PHIVOLCS-DOST recorded the earthquake at 3:33:13 PM on June 11, 2026, with its epicenter located 93 kilometers south 10 degrees west of Balut Island in the Municipality of Sarangani, Davao Occidental. The earthquake's coordinates were 4.58°N, 125.28°E, placing it well offshore in the waters south of the Philippine archipelago.
The quake had a depth of focus of 15 kilometers, classifying it as a shallow earthquake. Its origin was tectonic. The bulletin was formally issued by PHIVOLCS-DOST at 4:50 PM the same afternoon.
Shaking Felt in Two Areas
PHIVOLCS-DOST reported instrumental intensities for two locations. Santo Niño in South Cotabato registered Intensity II on the PHIVOLCS Earthquake Intensity Scale (PEIS), while Malungon in Sarangani registered Intensity I.
Under the PEIS, Intensity II describes shaking that is felt by a few people, particularly those who are at rest or in the upper floors of buildings. Intensity I is scarcely perceptible — detectable by sensitive instruments but generally not felt by people in ordinary circumstances.
No Damage Expected; Aftershocks Remain Likely
PHIVOLCS-DOST assessed that the June 11 event is not expected to cause damage. However, the agency noted that aftershocks are still expected to continue.
Part of an Ongoing Aftershock Sequence
PHIVOLCS-DOST identified this earthquake as an aftershock of the June 8, 2026 Mw 7.8 Offshore Sarangani earthquake. The June 11 event is listed as Earthquake Information No. 2 for this bulletin series.
PHIVOLCS-DOST stated that this will be the only bulletin issued for the June 11 event unless additional information becomes available.
Stay Informed Through Official Channels
The public is advised to monitor official PHIVOLCS updates at phivolcs.dost.gov.ph for the latest information on this ongoing aftershock sequence.