Aftershocks reach 18.487 after magnitude-4.2 quake north of Ruteng

Ruteng — BMKG recorded 18,486 aftershocks from the Flores earthquake sequence through Sunday at 06:00 WITA, according to Arief Tyastama, head of the Kupang Geophysics Station. A shallow magnitude-4.2 earthquake then occurred at 16:41 WITA on Monday, 28 September 2026, about 60 kilometres north of Ruteng in Manggarai, East Nusa Tenggara.

The Monday event brought the reported cumulative number of aftershocks to 18,487. The earthquake occurred offshore, 60 kilometres north of Ruteng, and was located in Manggarai, East Nusa Tenggara.

Why the update matters to Flores readers

The count tracks continuing seismic activity around Flores and provides a current measure of the aftershock sequence for communities in Manggarai and nearby areas. The figures were attributed to BMKG monitoring and the Kupang Geophysics Station.

The latest event was identified as a shallow earthquake with a magnitude of 4.2. Its reported location was offshore, 60 kilometres north of Ruteng in Manggarai, East Nusa Tenggara. The Monday timing was 16:41 WITA on 28 September 2026.

The reported cumulative total therefore stood at 18,487 aftershocks following the latest magnitude-4.2 event. The update concerned the Flores earthquake sequence and the continuing seismic activity recorded around the region, including Manggarai and nearby areas.

Sources

• Tribunnews Kupang — regional news report
• bmkg.go.id