219 km NE of Tarakan

13 days ago

BMKG2 SOURCESFELT

A magnitude 5.3 earthquake struck 219 km NE of Tarakan on 06 Oct 2026, 13:11 UTC. The hypocentre was 10 km below the surface — shallow by seismological convention. Shaking was reported in Tarakan and Nunukan. The figures have been revised 2 times since the first report.

Depth: 10 km
Latitude: 4.94°N
Time: 13:11 UTC
Magnitude: M5.3

REPORTED SHAKING (MMI SCALE)

II–IIITarakan, II-III Nunukanbarely felt to weak shaking

EPICENTRE

SEA

SHAKEMAP (BMKG)

BMKG shakemap for the M5.3 earthquake near Tarakan

View the official report↗

MAGNITUDE 5.3

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

The scale is logarithmic: this released about 89 times the energy of a magnitude 4.0, roughly the energy of 1 thousand tonnes of TNT.

10 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.