61 km S of Sukabumi Regency

15 days ago

BMKGFELT

A magnitude 4.2 earthquake struck 61 km S of Sukabumi Regency on 04 Oct 2026, 01:31 UTC. The hypocentre was 36 km below the surface — shallow by seismological convention. Shaking was reported in Pelabuhan Ratu, Cianjur and Cidolog. 7 other earthquakes above our reporting threshold have been recorded within 250 km in the past 30 days.

Depth: 36 km
Latitude: 7.51°S
Time: 01:31 UTC
Magnitude: M4.2

REPORTED SHAKING (MMI SCALE)

II–IIIPelabuhan Ratu, II - III Cianjur, II Cidologbarely felt to weak shaking

EPICENTRE

SEA

SHAKEMAP (BMKG)

BMKG shakemap for the M4.2 earthquake near Sukabumi Regency

View the official report↗

MAGNITUDE 4.2

Noticeable shaking of indoor objects. Damage is unlikely.

The scale is logarithmic: this released about 63 times the energy of a magnitude 3.0, roughly the energy of 30 tonnes of TNT.

36 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.