A magnitude 5.5 earthquake hit waters off Davao Occidental on Davao Occidental, on Wednesday morning, October 28, according to the Philippine Institute of Volcanology and Seismology (PHIVOLCS).
The tremor hit about 9 kilometers west of Balut Island, Sarangani at 7:43 a.m. at a depth of 10 kilometers.
PHIVOLCS reported a felt intensity of III in General Santos City.
The agency also recorded the following instrumental intensities for the first earthquake:
- Intensity IV – Sarangani, Davao Occidental; Alabel, Sarangani
- Intensity III – Malungon and Malapatan, Sarangani; General Santos City; Tupi, South Cotabato
- Intensity II – Jose Abad Santos, Don Marcelino, and Santa Maria, Davao Occidental; Kiamba, Maitum, and Maasim, Sarangani; Lake Sebu, South Cotabato
- Intensity I – Digos City and Matanao, Davao del Sur; Koronadal City and Surallah, South Cotabato
A second earthquake, with a magnitude of 5.4, followed at 9:11 a.m. at a depth of 10 kilometers.
PHIVOLCS recorded the following instrumental intensities for the second earthquake:
- Intensity IV – Sarangani, Davao Occidental
- Intensity III – Alabel and Kiamba, Sarangani; General Santos City; Tupi, South Cotabato
- Intensity II – Digos City, Davao del Sur; Jose Abad Santos, Don Marcelino, and Santa Maria, Davao Occidental; Maasim, Malapatan, Malungon, and Maitum, Sarangani; Lake Sebu and T'boli, South Cotabato; Palimbang, Sultan Kudarat
- Intensity I – Kidapawan City, Cotabato; Magsaysay and Matanao, Davao del Sur; Koronadal City, South Cotabato; Lebak, Sultan Kudarat
Both earthquakes were identified as aftershocks of the magnitude 7.8 offshore Sarangani and magnitude 6.5 offshore Davao Occidental earthquakes that occurred in June 2026.
No damage was expected from either earthquake, and no additional aftershocks were anticipated, according to the report.
Meanwhile, face-to-face classes and onsite work in government offices in Sarangani province were suspended for the day on October 28 as a precaution following the morning tremors.
