A tectonic earthquake measuring magnitude 4.9 struck the Sulawesi Sea on Wednesday, June 10, 2026, at 16:13 WIB, according to the Indonesian Meteorology, Climatology, and Geophysics Agency (BMKG). The epicenter was located 234 kilometers northwest of Tahuna, Kepulauan Sangihe, at a depth of 33 kilometers, and the event poses no tsunami threat to the region.
The earthquake on June 10 is part of a significant seismic sequence following a major M7.7 earthquake that struck Mindanao, Philippines, on June 8, 2026. BMKG monitoring has recorded 224 aftershocks in the area as of midday on June 10.
Context and Seismic Activity
The earthquake was categorized as a shallow event caused by plate subduction activity, with analysis indicating an oblique normal fault mechanism. Residents in Kepulauan Marore, Kepulauan Sangihe, reported tremors at an intensity scale of II-III MMI, while those in Miangas and Kendahe experienced intensity II MMI, as stated by BMKG Director of Earthquake and Tsunami, Dr. Wijayanto, S.T., M.Sc.
While this M4.9 event is a lower magnitude than the M6.7 aftershock recorded previously in this sequence, the high frequency of 224 aftershocks since the June 8 Mindanao earthquake highlights a period of active crustal adjustment. The primary risk remains the potential for localized structural stress, though current reports show no damage, indicating that the region’s current infrastructure has largely withstood these repeated tremors.
What to Expect Next
Seismologists expect the sequence of aftershocks to continue following the initial M7.7 event in Mindanao. Residents should monitor updates exclusively through official BMKG channels, including their website (http://www.bmkg.go.id), the @infoBMKG social media accounts, or the agency’s mobile applications. Officials advise the public to remain calm and avoid unverified reports, as the ongoing monitoring by the agency is the only reliable source for tracking the stabilization of the tectonic activity.
Frequently Asked Questions
Is there a risk of a tsunami following this earthquake?
No. The BMKG modeling confirms that the earthquake does not have the potential to trigger a tsunami.
How many aftershocks have occurred since the Mindanao earthquake?
As of 12:00 WIB on June 10, 2026, the BMKG has recorded 224 aftershocks, with the largest reaching a magnitude of M6.7.
Where can I find verified information regarding this event?
Verified information is available via the official BMKG website, the @infoBMKG Twitter and Instagram accounts, the InaTEWS_BMKG Telegram channel, or the official mobile applications.
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