KUPANG — A powerful tectonic earthquake with an updated magnitude of M 7.7 struck East Nusa Tenggara (NTT) on Saturday, August 15, 2026, at 04:58 AM WIB. The shallow quake, centered in the Flores Sea, triggered strong tremors and a tsunami warning across several coastal areas in Flores.
Technical Parameters & Event Overview
Magnitude: M 7.7
Date & Time: Saturday, August 15, 2026, at 04:58 AM WIB
Cause: Tectonic activity along the Flores Back-Arc Thrust with a thrust fault mechanism.
Tsunami Impact: A tsunami warning was temporarily issued for coastal areas before being officially lifted by BMKG at 07:30 AM WIB.
Aftershocks: As of Tuesday (Aug 18, 2026), BMKG has recorded over 2,100 aftershocks, with the largest measuring M 6.2.
Casualties & Impact Summary (BNPB Official Report)
According to updated reports from the National Disaster Management Agency (BNPB) and the Joint SAR Team:
| Category | Count | Details |
| Fatalities | 68 Dead | Confirmed across districts including Manggarai, East Manggarai, Sikka, and Ende. |
| Injured | 213 Injured | Ranging from minor to severe injuries caused by collapsing building debris. |
| Missing | 0 Missing | BNPB reports no individuals remain missing, though Basarnas remains on full alert. |
Emergency Response & Infrastructure Damage
Strong tremors were felt across West Manggarai, East Manggarai, Ngada, Nagekeo, Ende, and East Flores. Beyond the human toll, thousands of residential homes, public facilities, and communication networks sustained damage.
Joint SAR teams alongside local agencies are distributing emergency relief, establishing shelters, and providing medical aid. BMKG advises residents to stay calm yet vigilant against ongoing aftershocks and avoid structurally damaged buildings.
