Deadly 7.8 Magnitude Earthquake Strikes Southern Philippines, Triggers Asian Tsunami Alerts

A devastating magnitude 7.8 earthquake struck off the coast of Mindanao, Philippines, resulting in at least 15 fatalities, significant building destruction, and widespread tsunami alerts across multiple Asian nations. The seismic event occurred shortly before 7:40 AM local time on Monday, June 8, 2026 (23:40 GMT, Sunday), according to the United States Geological Survey (USGS).

Following the initial quake, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported over an hour of continuous aftershocks. General Santos, a city in southern Mindanao with a population of 722,000, bore the brunt of the damage, experiencing what PHIVOLCS described as a “very strong” event on its internal intensity scale.

Visual evidence, including videos shared on official social media channels, depicted a three-story building, which housed a Jollibee restaurant, collapsing into a cloud of debris. Al Jazeera reported other images showing extensive structural damage, including shattered windows and caved-in roofs. Police spokesperson Robert Dagun confirmed to a local radio station that parts of St Elizabeth Hospital in General Santos were severely damaged, forcing an evacuation and the relocation of patients and medical staff to temporary outdoor facilities.

Mary Ann Blanco Rhudy, a Catholic nun affiliated with Notre Dame of Dadiangas University in General Santos, recounted her experience of the earthquake while traveling to the college. She observed cars swerving erratically and trees swaying violently, expressing relief that no collisions occurred. Rhudy also noted partial collapses within the university’s buildings.

In response to the disaster, Philippine President Ferdinand Marcos Jr. activated emergency services, including the Office of Civil Defence and the National Disaster Risk Reduction and Management Council. President Marcos ordered the immediate closure of schools in affected regions, prioritizing child safety on what was scheduled to be the first day of school. The state-run Philippine News Agency reported that this closure impacted 3.2 million students and 128,000 teachers and personnel.

The powerful quake triggered tsunami warnings across Asia, including in the Philippines, Indonesia, and Japan. Philippine authorities urged residents in nine provinces—Sarangani, Davao Occidental, Tawi-Tawi, and Sulu among them—to evacuate immediately to higher ground or further inland. PHIVOLCS also advised boat owners in harbors, estuaries, or shallow coastal waters within these provinces to secure their vessels and move away from the waterfront. President Marcos echoed these warnings, emphasizing the critical importance of heeding government advisories and moving to higher ground for safety.

The US-based Pacific Tsunami Warning Center initially forecast tsunami waves potentially reaching 3 meters (9.8 feet) in Philippine coastal areas, and up to 1 meter (3.3 feet) in parts of Indonesia and Malaysia. By midday in the Philippines (04:00 GMT), the Hawaii-based center announced that the immediate tsunami risk had passed, though coastal residents were still advised to remain alert and follow local authority instructions. The largest observed tsunami waves, reaching 0.83 meters (2.7 feet), were reported in Indonesia's Northern Sulawesi province on Monday morning.

Indonesia had issued and subsequently cancelled tsunami warnings for North Sulawesi, Gorontalo provinces, and the Sangihe Islands. Likewise, officials in the Northern Mariana Islands and Guam rescinded earlier warnings, while cautioning about continued risks of strong currents and dangerous beach conditions. Japan's southern coast and outlying islands maintained a tsunami advisory, urging residents to avoid river mouths and coastal areas until further notice.