Aftershocks from Indonesian Earthquakes Trigger Tsunami Worries in Sulut, Philippines Experiences Another Powerful Quake of 7.7 Magnitude

Dozens of earthquakes struck the Sangihe Islands in North Sulawesi on June 8, 2026, with the most powerful tremor reaching magnitude 6.8. According to reporting from detikNews and other local outlets, these seismic events followed a magnitude 7.7 earthquake in the Philippines that triggered tsunami concerns in Indonesia, though the BMKG has since lifted the early warnings for the region.

What caused the seismic activity in the Sangihe Islands?

The region experienced a series of dozens of earthquakes on the night of June 8, 2026. While many of these tremors were smaller, the largest was recorded at magnitude 6.8, according to detikNews. This surge in activity occurred in the wake of a massive magnitude 7.7 earthquake in the Philippines, which was powerful enough to trigger tsunami alerts across parts of Indonesia.

The BMKG, Indonesia’s Meteorology, Climatology, and Geophysical Agency, monitored the situation closely as the tremors hit North Sulawesi. After evaluating the risk, the agency officially ended the tsunami early warning for the North Sulawesi area, as reported by Epaper Media Indonesia.

How has the earthquake affected Tahuna and surrounding areas?

Local communities in the Sangihe Islands felt the impact of multiple shocks. Tribrata News reported that a magnitude 4.4 earthquake specifically shook Tahuna, a key area within the islands. These tremors contributed to a broader pattern of instability that left residents on edge throughout the night.

The danger has persisted beyond the initial large shocks. According to Kompas.id, continuous aftershocks have haunted the outermost islands of North Sulawesi. This ongoing seismic activity has made it difficult for residents to find safe locations, as the unpredictability of the tremors forces people to remain vigilant and seek shelter away from potentially unstable structures.

What is the current status of the tsunami warning?

While the magnitude 7.7 event in the Philippines initially caused significant alarm regarding potential tsunamis in Indonesia, the threat has subsided. The BMKG has terminated the early warning, signaling that the immediate risk of a tsunami resulting from these specific events has passed for North Sulawesi.

Despite the end of the tsunami alert, the primary concern for local authorities and residents remains the sequence of aftershocks. The frequency of these tremors continues to disrupt the stability of the outermost regions of the province.