A series of strong earthquakes, ranging from magnitude 4.3 to 5.3, rocked Davao Occidental beginning Thursday, August 13, 2026.

According to the Philippine Institute of Volcanology and Seismology (PHIVOLCS), a magnitude 5.3 earthquake struck off the coast of Don Marcelino town around 5:22 p.m. on Thursday.

The quake had a depth of 103 kilometers.

PHIVOLCS initially recorded the earthquake at magnitude 5.2, with a depth of 49 kilometers, before upgrading it to magnitude 5.3.

Reported Intensities:

Intensity III - Don Marcelino and Santa Maria, Davao Occidental; Malungon, Sarangani; City of Digos, Davao del Sur

Intensity II – City of Davao; Malita, Davao Occidental; City of General Santos; City of Koronadal, South Cotabato; Kiamba, Maasim, Alabel, Maitum, Glan, and Malapatan, Sarangani; Bansalan, Padada, Magsaysay, Matanao, Hagonoy, Kiblawan, Malalag, Santa Cruz,
and Sulop, Davao del Sur

Intensity I - Santo Niño, South Cotabato; Columbio, Sultan Kudarat

At around 10:56 p.m., a magnitude 4.3 earthquake struck Balut Island in the town of Sarangani.

PHIVOLCS said the earthquake had a depth of 10 kilometers.

On Friday, a magnitude 5.3 earthquake shook the same town around 2:39 a.m.

PHIVOLCS said the tremor had a depth of 48 kilometers.

It was recorded initially at magnitude 5.9, with a depth of 10 kilometers, before being downgraded to magnitude 5.3.

Instrumental Intensities:

Intensity III - Kiamba, Sarangani; Palimbang, Sultan Kudarat; T'Boli, South Cotabato

Intensity II - Malapatan, Maasim, Maitum, and Malungon, Sarangani; City of Digos, Davao del Sur

Intensity I - Surallah and Tampakan, South Cotabato; Santa Maria, Davao Occidental; Magsaysay, Davao del Sur

PHIVOLCS said it was an aftershock of magnitude 7.8 earthquake off Sarangani and magnitude 6.5 earthquake off Davao Occidental.

At around 9:14 a.m., a magnitude 5.2 earthquake struck off the coast of Sarangani town, with a depth of 10 kilometers.

PHIVOLCS added that the tremor was also an aftershock of the magnitude 7.8 earthquake off Sarangani and 6.5 earthquake off Davao Occidental.

Instrumental Intensities:

Intensity III -Maasim, Sarangani

Intensity II - Kiamba and Malapatan, Sarangani; City of General Santos; Tupi and T'Boli, South Cotabato

Intensity I - Malungon and Maitum, Sarangani; Palimbang, Sultan Kudarat