54 km NW of Calang-Aceh Jaya

19 days ago

BMKG2 SOURCESFELT

A magnitude 4.1 earthquake struck 54 km NW of Calang-Aceh Jaya on 30 Sept 2026, 02:35 UTC. The hypocentre was 5 km below the surface — shallow by seismological convention. Shaking was reported in Calang, Aceh Besar, Banda Aceh and Sigli. 3 other earthquakes above our reporting threshold have been recorded within 250 km in the past 30 days.

Depth: 5 km
Latitude: 4.84°N
Time: 02:35 UTC
Magnitude: M4.1

REPORTED SHAKING (MMI SCALE)

III–IVCalang, III Aceh Besar, III Banda Aceh, II Sigliweak to light shaking

EPICENTRE

SEA

View the official report↗

MAGNITUDE 4.1

Noticeable shaking of indoor objects. Damage is unlikely.

The scale is logarithmic: this released about 45 times the energy of a magnitude 3.0, roughly the energy of 21 tonnes of TNT.

5 KM DEEP

Shallow earthquakes release their energy close to the surface, so they are felt more strongly, and do more damage, than deeper earthquakes of the same magnitude.