Magnitude 6.4 earthquake in Philippine waters, 35 km SW of Balut Island, Davao Occidental — June 8, 2026

At 8:55 a.m. on Monday, June 8, a magnitude 6.4 earthquake struck off the southwest coast of Mindanao, about 35 kilometers southwest of Balut Island, Davao Occidental, according to the Philippine Institute of Volcanology and Seismology (Phivolcs).

The quake struck at a depth of 34 kilometers.

• Magnitude: M6.4
• Time: June 8, 2026, 8:55 AM PHT
• Depth: 34 km
• Location: Philippine waters, 35 km SW of Balut Island, Davao Occidental (5.24°N, 125.16°E)

What happened

This was the strongest early aftershock of the magnitude 7.8 Offshore Sarangani earthquake, which struck at 7:37 a.m. the same day.

Phivolcs first put it at magnitude 6.7, the Inquirer reported.

The agency's bulletin, issued on June 9, lists magnitude 6.4.

Instruments recorded Intensity V, or strong shaking felt by most people indoors and outdoors, in General Santos City, T'boli in South Cotabato and Kiamba in Sarangani.

Residents of Davao City reported Intensity III, or weak shaking felt by many people indoors.

The bulletin said damage and more aftershocks were expected.

Sources: PHIVOLCS primer on the 8 June 2026 earthquake, PHIVOLCS Earthquake Information No. 2, Inquirer

Nearby earthquakes

The strongest other Philippine earthquakes within 100 km and 3 days before or after this one (up to five), including possible foreshocks and aftershocks.

• M7.8 Philippine waters, 32 km S of Maasim, Sarangani, 33 km deep, 42 km away, June 8, 2026 7:37 AM PHT
• M5.1 29 km SW of Balut Island, Davao Occidental, 49 km deep, 6 km away, June 8, 2026 7:22 PM PHT
• M5.5 Philippine waters, 44 km SW of Maasim, Sarangani, 2 km deep, 57 km away, June 8, 2026 10:52 PM PHT
• M5.2 20 km SSW of Balut Island, Davao Occidental, 17 km deep, 25 km away, June 9, 2026 7:38 AM PHT
• M5.3 Philippine waters, 38 km SW of Maasim, Sarangani, 2 km deep, 56 km away, June 9, 2026 6:07 PM PHT

Towns that likely felt it

Estimated intensity in the nearest towns, from the magnitude, depth and distance. These are estimates, not reports.

• Sarangani, Davao del Sur: Intensity VI (31 km from the epicenter)
• Glan, Sarangani: Intensity VI (64 km from the epicenter)
• Jose Abad Santos, Davao del Sur: Intensity V (78 km from the epicenter)
• Maasim, Sarangani: Intensity V (80 km from the epicenter)
• Malapatan, Sarangani: Intensity V (88 km from the epicenter)
• Kiamba, Sarangani: Intensity V (98 km from the epicenter)
• General Santos City, South Cotabato: Intensity V (100 km from the epicenter)
• T'Boli, South Cotabato: Intensity V (102 km from the epicenter)

Estimated intensity in Manila

Not felt (MMI 1), 1137 km from the epicenter.