Magnitude 7.8 Earthquake Strikes Sarangani, Tsunami Warnings Across Mindanao

The Ground Shook Beneath Sarangani at Dawn

A powerful magnitude 7.8 earthquake struck off the coast of Sarangani province early Monday morning, June 8, 2026, sending strong tremors across parts of Mindanao. Philippine Institute of Volcanology and Seismology, or Phivolcs, recorded the quake and traced it to movement along the Cotabato Trench, the same fault line responsible for the devastating 1976 Moro Gulf earthquake and tsunami that claimed thousands of lives decades ago.

For families in coastal barangays, the shaking arrived without warning. Sari-sari store owners in Sarangani reported shelves toppling and children rushing outside in their sleep clothes. Fishermen who had already set out in their small boats felt the sea suddenly rise and fall beneath them, a sensation many described as the ocean itself gasping for breath.

Tsunami Waves Detected and Warnings Spread Across Nine Areas

Within an hour, Phivolcs confirmed tsunami waves in six locations and immediately issued warnings for nine coastal provinces in Mindanao: Sarangani, Davao Occidental, Tawi-Tawi, Sulu, Basilan, Zamboanga del Sur, Zamboanga Sibugay, Sultan Kudarat, and South Cotabato. The first waves were expected between 7:37 a.m. and 9:37 a.m., with the possibility that activity could continue for hours.

Phivolcs urged residents in all low-lying coastal zones to move to higher ground without delay. Civil Defense Undersecretary Harold Cabreros identified Regions 9, 11, 12, and the Bangsamoro Autonomous Region in Muslim Mindanao as the areas facing the greatest risk. In many barangays, kapitbahays helped one another carry elderly relatives and gather what little they could before heading uphill, echoing the spirit of bayanihan that often surfaces in times of crisis.

President Marcos Appeals Directly to Affected Kababayans

President Ferdinand Marcos Jr. released a public message calling on residents to prioritize safety above all else. “To our kababayans in the affected provinces, please heed the tsunami warning. Move to higher ground now. Do not wait. Your life is more important than anything left behind,” he said.

The appeal reached families already on the move. In Davao Occidental, tricycle drivers offered free rides to neighbors carrying children and sacks of rice. In Tawi-Tawi and Sulu, boat owners who usually ferry passengers between islands instead used their vessels to help shuttle people away from the shoreline before operations were halted.

Two Lives Lost in South Cotabato Amid Early Reports of Damage

South Cotabato disaster officials reported two deaths in Tupi municipality. One resident was struck by falling debris during the shaking, while another suffered cardiac arrest. Buildings in Central Mindanao also sustained damage, though authorities have not yet released official verified counts of injuries or total destruction as of this posting.

These early losses weigh heavily on tight-knit communities where everyone knows one another. In many towns, barangay captains are now coordinating with local churches and schools to set up temporary shelters for families who left their homes with little more than the clothes on their backs.

Coast Guard and Agencies Suspend Operations and Assist Evacuations

The Philippine Coast Guard District Southeastern Mindanao suspended all watercraft operations in Davao Occidental. PCG spokesperson Commodore Noemi Cayabyab advised fishermen and coastal residents to follow the tsunami warning strictly. Vessel owners in harbors were told to secure their boats and move away from waterfront areas, while those already at sea were instructed to stay in deeper waters.

Coast Guard personnel were deployed to help with coastal evacuations. President Marcos directed members of the National Disaster Risk Reduction and Management Council and other agencies to proceed immediately to affected areas for assessment and support. In several provinces, local government units opened evacuation centers in higher barangays, where volunteers prepared hot meals using whatever supplies were on hand.

Small Waves Reach Indonesia While Mindanao Remains on Alert

Small tsunami waves were also recorded in at least nine areas in Indonesia, though that country lifted its own warning by 1 p.m. For Mindanao residents, the situation remains fluid, with Phivolcs continuing to monitor aftershocks and possible wave activity.

Ordinary Filipinos in the warned provinces are now focused on staying safe and looking after one another. Fishermen who rely on the sea for their daily catch are instead watching from higher ground, wondering how long it will be before they can return to their boats. Families in evacuation centers share stories of past storms and quakes, drawing strength from the knowledge that they have weathered difficult times together before.

As the day unfolds, the priority remains clear: protecting lives in the coastal communities that form the heart of Mindanao. Updates will continue as verified information becomes available from Phivolcs, the Coast Guard, and local officials on the ground.