Mindanao's Strongest Earthquake Since 1990: June 2026 Sarangani Quake

Quick Answer

A magnitude 7.8 earthquake struck offshore Sarangani at 7:37 a.m. on June 8, 2026, near Maasim and the Cotabato Trench. As of June 11, 2026, AP reported official figures of at least 47 dead, 688 injured, and 31 missing, with more than 45,000 people displaced. The hardest-hit areas included General Santos City, Sarangani, South Cotabato, Davao Occidental, and Davao del Sur. Figures remain subject to validation as relief, road-clearing, and search operations continue.

Key takeaways

• The June 8 quake was measured at magnitude 7.8 and centered offshore near Maasim, Sarangani.
• General Santos City saw some of the most visible urban damage, including a collapsed Jollibee building and severe hospital, city hall, school, and housing damage.
• Sarangani, South Cotabato, Davao Occidental, and Davao del Sur reported deaths, landslides, damaged homes, disrupted utilities, and communities that needed air or emergency access.
• Malapatan recorded Instrumental Intensity VIII, the highest reported instrumental intensity in the affected area.
• The Cotabato Trench context matters because the same system has produced major historical earthquakes and was being watched after offshore swarms before June 2026.
• Casualty and missing-person figures should be read as dated situation numbers, not final totals.

Frequently Asked Questions

Where were deaths reported?

The working breakdown listed deaths in Sarangani, South Cotabato, Davao Occidental, and Davao del Sur, with major fatal incidents tied to landslides in Glan and Jose Abad Santos, building damage in General Santos City, and local damage in Tupi and Malapatan.

Was there a tsunami warning?

Yes. Tsunami warnings were issued for the southern Philippines and for nearby countries including Indonesia, Malaysia, Taiwan, Papua New Guinea, Japan, and Palau. Warnings were later lifted, but strong currents remained dangerous in some coastal areas.

What happened on June 8

The earthquake struck offshore from Sarangani on the first morning of the school year, while students, parents, workers, and commuters were already moving through towns and city centers. The shaking was felt across Mindanao and reached communities well beyond the nearest coastal towns.

The epicenter was reported about 32 kilometers southwest of Maasim, Sarangani, with PHIVOLCS attributing the event to tectonic movement along the Cotabato Trench. General Santos City reported destructive Intensity VII shaking, while Malapatan, Sarangani recorded Instrumental Intensity VIII, the highest instrumental reading reported anywhere affected by this earthquake.

The 7:37 a.m. timing may have saved lives in some schools. Many students were still outdoors for flag ceremonies when the quake hit, instead of being inside classrooms. That does not soften the disaster, but it helps explain why some school collapses and structural failures did not produce even higher classroom casualties.

The dead, the injured, and the missing

Sarangani's 19 deaths included a landslide in Glan that killed 14 people and 7 deaths reported in Malapatan, figures that provincial authorities were still reconciling as of June 11. South Cotabato recorded 15 deaths, including 13 in General Santos City and 2 in Tupi. Davao Occidental recorded 11 deaths, including 7 in Jose Abad Santos from two separate landslides. Davao del Sur recorded 1 death.

The deaths were not tied to one dramatic image alone. The risk was broader than the Jollibee collapse video: warehouses, homes, schools, hospitals, barangay halls, bridges, and slopes all became danger points.

General Santos City damage

General Santos City became the most visible symbol of the disaster after a Jollibee building on a commercial strip collapsed on video. The building also housed Love Radio GenSan and DZRH News FM operations, but Jollibee said by Monday evening that all of its team members were safe and accounted for.

Two people in General Santos City died when a wall at the Century Pacific Food warehouse collapsed.

The city also reported damage to Notre Dame of Dadiangas University, major city hall damage, and hundreds of damaged homes. The working brief listed 397 houses collapsed and 1,430 others partially damaged. Commercial centers including SM City GenSan and Robinsons were closed for safety inspections after the quake.

St. Elizabeth Hospital carried one of the clearest human pictures of the disaster. Hospital management said its outpatient building would need four to six months to rebuild before it could reopen. Patients were treated outdoors in tents under the June heat, including a young mother who gave birth on the hospital grounds on Tuesday morning, June 9.

A state of calamity was declared in General Santos City, triggering a price freeze on basic goods and opening emergency response mechanisms while national and local officials assessed repairs. Philippine Airlines and Cebu Pacific canceled all commercial flights to and from General Santos through June 11, with 17 commercial flights canceled on the first day alone. The airport remained available for military, government, and humanitarian flights.

Glan, Sarangani, and the towns closest to the epicenter

Sarangani recorded the heaviest provincial toll in early reports, and Glan became one of the clearest examples of why the count rose slowly. The town was unreachable by road for roughly two days after landslides and bridge collapses. Residents, including injured people, could only be reached by helicopter in the first phase of response.

Clearing operations had not yet begun in many parts of Glan as of June 10, according to the working brief. For one of Sarangani's largest towns, that isolation was not a side detail. It shaped the entire rescue picture because responders could not simply drive in and count damage house by house.

Malapatan recorded Instrumental Intensity VIII, higher than General Santos City. Maasim, the town nearest the offshore epicenter, reported collapsed and damaged homes. Sarangani declared a province-wide state of calamity on June 10, while Glan declared its own state of calamity and Alabel separately declared one citing damage in Barangays Pag-asa, New Canaan, Bagacay, and Paraiso. Each declaration matters because it unlocks emergency funds and local response powers.

South Cotabato, Koronadal, and road damage

In South Cotabato, damage was reported in General Santos, Koronadal, Tupi, Banga, and road corridors linking communities across the province. Koronadal experienced simultaneous disruption to electricity, water, and internet service after the quake, a reminder that the regional center was not only watching the disaster from a distance.

Tupi was included in the casualty breakdown, while Banga reported bridge damage and road links between Tboli and General Santos were affected. Court operations were suspended in several affected areas while engineers and local officials inspected buildings.

Jose Abad Santos and Davao Occidental

Davao Occidental deserves more than a footnote. Jose Abad Santos suffered two separate landslides that killed 7 people and left 18 others missing as of June 10, with parts of the town still unreachable by land. The Barangay Hall in Malalan, Jose Abad Santos, collapsed.

Residents of Balut Island, including injured people, elderly residents, and a mother with an infant, had to be airlifted to Davao City for medical care. The SMC Malita Coal power plant in Davao Occidental also tripped offline after the quake, contributing to the regional power outage.

Schools, students, and the first day of classes

The quake struck on the first day of school for many communities, which made schools one of the most emotionally visible parts of the disaster. As of June 8, the working brief listed 8,642 schools affected across Mindanao. By June 10, DepEd confirmed 1,022 public schools damaged.

More than 3.2 million students and about 129,000 teachers and school personnel were affected across five regions. President Marcos later inspected Romana C. Acharon Central Elementary School and General Santos National High School, two of the schools folded into the national response picture.

Cotabato City had its own eerie timing. Students at Cotabato City Central Pilot Elementary School were in the middle of a scheduled earthquake drill when the real quake hit. What was supposed to be practice became the actual event.

Power, transport, and public services

At peak disruption, about 157,000 electricity consumers had no power. Two power plants tripped offline: the SMC Malita Coal facility in Davao Occidental and the Sarangani Energy Corporation plant in Maasim. Power to South Cotabato, Sarangani, and General Santos was restored by the afternoon of June 9, with full grid normalization targeted for the end of the week.

Transport disruption centered on General Santos City airport. Philippine Airlines and Cebu Pacific canceled commercial flights through June 11, but military, government, and humanitarian flights continued. In Davao City, the Bolton Bridge southbound lane was also closed pending inspection, affecting movement in the region's largest city.

Tsunami warnings and aftershocks

Because the quake was offshore, tsunami warnings were issued for coastal areas in the southern Philippines and for nearby countries including Indonesia, Malaysia, Taiwan, Papua New Guinea, Japan, and Palau. The warnings were later lifted, but the international reach showed why Cotabato Trench events are not only local stories.

Waves were recorded in several places: up to 1.4 meters along Mindanao's southern coast, up to 1.5 meters at Talengan in North Sulawesi, 20 centimeters in Japan's Ogasawara Islands and Okinawa, and about 3 centimeters in Palau. At least one person drowned and others were reported missing after being swept by strong currents near the General Santos City coast, even after official tsunami warnings had been lifted.

Thousands of aftershocks were recorded after the mainshock, with a reported 3,019 aftershocks by June 11. PHIVOLCS warned the sequence could continue for more than a month. Residents in affected areas should treat aftershock advisories as an ongoing safety issue, especially around cracked walls, damaged schools, unstable slopes, bridges, hospitals, and public buildings. Old earthquake footage from other events started circulating as if it were happening now. For anything that affects your real-world decisions, please stick to official sources only.

Sara Duterte and the political reaction online

Vice President Sara Duterte was absent from affected areas during the first two days after the quake.

She visited the wake of victims in Malapatan, Sarangani on June 10, then distributed relief in Cotabato City on June 11.

Marcos visit, aid, and government response

President Ferdinand Marcos Jr. flew to General Santos City on June 10. He visited St. Elizabeth Hospital, Romana C. Acharon Central Elementary School, and General Santos National High School, then oversaw the distribution of financial assistance at the city oval. He was accompanied by DPWH Secretary Vince Dizon, DepEd Secretary Sonny Angara, DSWD Secretary Rex Gatchalian, and Mayor Lorelie Pacquiao.

The national government announced P50,000 in cash aid for each family that lost someone in the earthquake. General Santos City was also committed P100 million from the Local Government Support Fund for city hall reconstruction and related infrastructure.

Marcos said DOH mental health programs would be available for students and school personnel, with specialized training for teachers. The GSIS Emergency Loan Program opened to eligible active members and pensioners in calamity-declared areas until September 7, 2026. BIR extended all deadlines for taxpayers in General Santos City, Sarangani, and South Cotabato to June 30, 2026. DTI imposed a price freeze on basic goods in General Santos City following the state of calamity declaration.

Aid and appeals also came from outside the national executive. The CBCP called on bishops to authorize a special second collection during Sunday masses on June 14 for earthquake victims. Cebu approved P10 million in financial assistance for General Santos City, and Pangasinan also pledged support.

Why the Cotabato Trench matters

The Cotabato Trench has been associated with some of Mindanao's major historical earthquake and tsunami events, including the 1918 Celebes Sea earthquake at magnitude 8.3, the 1976 Moro Gulf earthquake at magnitude 8.0 to 8.1, and the 2002 Southern Mindanao earthquake at magnitude 7.5.

The trench was being actively monitored before June 8, which is why the June 2026 quake should be read as both a current emergency and a long-term planning lesson for coastal evacuation, school safety, hospital redundancy, landslide response, mental health support, and local communication systems across southern Mindanao.