M6.6 Earthquake near Teluknaga, Indonesia — 11 September 2026

Strong earthquakes can cause significant damage in populated areas within roughly 100 km of the epicentre, particularly to older masonry buildings. Landslides and liquefaction become a real risk in susceptible ground.

A magnitude 6.6 earthquake radiates roughly 119,787 tons of TNT equivalent in seismic energy.

The USGS assigns this earthquake a significance score of 671, which meets the USGS threshold of more than 600 for its significant-earthquake list. The ranking combines magnitude with available Did You Feel It responses and PAGER alert level; it is not a direct measurement of damage.

That is about 04:31 local solar time at the epicentre, in the early hours of the morning.

This event was deeper than 97% of the 1,522 earthquakes recorded in Indonesia in our catalogue and stronger than 99% of them.

The epicentre was located at -5.0932, 106.9030 — 115 km north-northeast of Teluknaga. The closest other recorded event was a magnitude 4.4 earthquake 33 km west-northwest of here on 01 August 2025.

The nearest other settlements in our records are Teluknaga (33 km west-northwest), Kresek (112 km south-southwest), Serang (148 km west-southwest) and Cikarang (156 km south-southeast).

At 359 km this was a deep-focus earthquake, occurring well inside the subducting slab rather than in the crust. Deep events are rarely damaging even at large magnitudes, though they can be felt over very long distances.

This catalogue does not ingest eyewitness responses, so it cannot confirm where this earthquake was felt. Based on magnitude alone, an event this size can produce strong, widely felt shaking. Its deep focus normally weakens surface shaking while spreading perceptible motion over a broad area.

The USGS record does not carry a link to NOAA tsunami information. That field is not an all-clear and does not state whether a tsunami occurred. In this case, a damaging tsunami would be less likely because its 359 km focal depth is too great to deform the sea floor significantly; it occurred inland rather than beneath the sea floor. For an active coastal alert, use tsunami.gov or your local warning authority.

No further earthquakes have been recorded within about 150 km of the epicentre since this event was recorded.

11 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 5.3 event near Labuan on 07 July 2026. This M6.6 event released about 89 times more energy than that event.

2 earthquakes have been recorded within 100 km of this epicentre in the past year, 1 of them in the past 30 days.

This earthquake is part of the September 2026 worldwide record, and of earthquakes in Indonesia during September 2026. Browse the full monthly archive to compare periods.