← Back to the earthquake file

Seismic activity

Magnitude 3.9 tremor recorded in San José del Palmar

Editorial illustration for “Magnitude 3.9 tremor recorded in San José del Palmar”
Illustration éditoriale En Colombie

Updated August 14, 2026 at 3:44 a.m. Colombia time

The Colombian Geological Service recorded a magnitude 3.9 event at a depth of 91 kilometres in San José del Palmar, Chocó, on August 13 at 10:21:44 p.m. Colombia time. Its detailed record displayed 559 felt reports when consulted.

A location in Chocó

SGC’s manual record locates the event at latitude 4.87 and longitude -76.40. It lists San José del Palmar at 19 kilometres, El Cairo at 23 kilometres and Nóvita at 25 kilometres as nearby places.

The time corresponds to 3:21:44 a.m. UTC on August 14. The actual occurrence time, not the bulletin publication time, places the entry at 10:30 p.m. in the Colombia timeline.

Revised official parameters

SGC’s revised initial publication, issued at 10:28 p.m., listed magnitude 4.0, a depth of 87 kilometres and Nóvita as the reference. The manual record consulted later lists magnitude 3.9, a depth of 91 kilometres and San José del Palmar.

These manual values are the current reference parameters for event SGC2026pxhbxc.

Available instrumental data

The published calculation draws on 108 stations. The record lists an RMS of 0.9 seconds, an azimuthal gap of 80 degrees and peak ground acceleration of 10.41 cm/s².

It displayed 559 felt reports when consulted. These forms document how the tremor was perceived; they are not a damage assessment.

No damage toll in the bulletin

The seismic bulletin publishes no damage or incident attributed to this event. The absence of a toll does not by itself establish that no effects were observed.

SGC does not call this tremor an aftershock in the consulted sources. Any link to the main earthquake would require explicit seismological interpretation.

Sources and transparency