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4.3MAG

LIGHT EARTHQUAKE

152 km N of Agats, Indonesia

USGS

A magnitude 4.3 earthquake struck 152 km N of Agats, Indonesia on 21 Sept 2026, 13:58 UTC. The hypocentre was 148.9 km below the surface — intermediate by seismological convention. 4 other earthquakes above our reporting threshold have been recorded within 250 km in the past 30 days.

Depth
148.9 km

intermediate

Latitude
4.18°S

138.00°E longitude

Time
13:58 UTC

21 Sept 2026

Magnitude
M4.3

mb

EPICENTRE

View the official report

MAGNITUDE 4.3

Noticeable shaking of indoor objects. Damage is unlikely.

The scale is logarithmic: this released about 89 times the energy of a magnitude 3.0, roughly the energy of 43 tonnes of TNT.

148.9 KM DEEP

At this depth the energy spreads before it reaches the surface. Shaking is usually weaker than a shallow earthquake of the same size, but it can be felt across a wider area.

NEARBY IN THE PAST 30 DAYS

4 earthquakes above our reporting threshold within 250 km of this one, the largest a magnitude 5.5.

OTHER RECENT EARTHQUAKES

M4.3 earthquake — Agats, Indonesia · Quakewire