BMKG records 3,055 aftershocks in NTT, confirms no tsunami risk

The Indonesian Meteorology, Climatology, and Geophysics Agency (BMKG) has documented a significant number of aftershocks in Nusa Tenggara Timur (NTT) following a powerful magnitude 7 earthquake. As of Monday, August 19, 2026, at 5:00 PM Western Indonesian Time, the agency recorded 3,055 aftershocks over five days.

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So the number of aftershocks until 5 PM this afternoon, August 19, 2026, is 3,055 aftershocks with the largest aftershock being 6.2 magnitude and the smallest 1.1 magnitude.

These tremors varied in intensity, with the largest recorded at magnitude 6.2 and the smallest at magnitude 1.1. Despite the high number, only 88 of these aftershocks were actually felt by the local population. BMKG officials estimate that the region will need approximately three to four weeks to return to a state of normalcy as the frequency and intensity of these tremors gradually decrease.

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So the decay requires approximately 3 to 4 weeks in the coming period.

Director of Earthquakes and Tsunamis at BMKG, Wijayanto, reassured the public that there is no cause for alarm regarding a potential tsunami. He explained that the largest possible magnitude for aftershocks in the NTT region is estimated to be between 7.7 and 7.8. Therefore, the ongoing aftershocks are expected to be smaller and will continue to diminish as the tectonic plates achieve stability. This process is a natural part of the seismic cycle following a major earthquake.

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So, from now on, it will be aftershocks that lead towards the stability of the plate itself. So, we ensure that in the near future there will be no aftershocks that can cause a tsunami.