68 km SW of Calang

15 days ago

BMKG2 SOURCESFELT

A magnitude 5.9 earthquake struck 68 km SW of Calang on 03 Oct 2026, 23:37 UTC. The hypocentre was 26 km below the surface — shallow by seismological convention. Shaking was reported in Aceh Besar, Banda Aceh, Aceh Barat, Aceh Selatan, Pidie Jaya, Bener Meriah, Nagan Raya, Aceh Tengah and Sigli. The figures have been revised 1 time since the first report. 3 other earthquakes above our reporting threshold have been recorded within 250 km in the past 30 days.

Depth: 26 km
Latitude: 4.56°N
Time: 23:37 UTC
Magnitude: M5.9

REPORTED SHAKING (MMI SCALE)

III–IVAceh Besar, III Banda Aceh, III Aceh Barat, II Aceh Selatan, II Pidie Jaya, II Bener Meriah, II Nagan Raya, II Aceh Tengah, II Sigliweak to light shaking

EPICENTRE

SEA

SHAKEMAP (BMKG)

BMKG shakemap for the M5.9 earthquake near Calang

View the official report↗

MAGNITUDE 5.9

Can damage poorly constructed buildings; well-built structures usually escape with little harm.

The scale is logarithmic: this released about 710 times the energy of a magnitude 4.0, roughly the energy of 11 thousand tonnes of TNT.

26 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.