Chocó seismic swarm exceeds 1,568 recorded events
The Geological Survey said no new aftershocks were located in the preceding 24 hours, while four swarm events above magnitude 2 and below 4 were located on October 1.
Event / data period: 2026-10-01
Published: · Updated:
Colombia’s Geological Survey reported an update on seismic sequences following the magnitude 7.4 earthquake of August 10. In Chocó, the aftershock count remained at 334 because no new aftershocks were located during the 24 hours before the October 1 bulletin.
The separate swarm near several municipalities had more than 1,568 located events, including 31 of magnitude 4.0 ML or higher. Four events between magnitude 2.0 and 4.0 ML were located on October 1. The agency describes a swarm as a sequence without one clearly dominant mainshock.
Data
Chocó seismic swarm exceeds 1,568 recorded events
The Geological Survey said no new aftershocks were located in the preceding 24 hours, while four swarm events above magnitude 2 and below 4 were located on October 1.
- Events located in the seismic swarm
- ≥1,568 events
- 2026-10-01 · Observed
Methodology
The bulletin says “more than 1,568”; this is stored as a lower bound and kept separate from the 334 aftershocks.
Updated:
Subjects and places
Subject proposals
- EnvironmentSuggested
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- Colombia · Place role: Coverage · Place type: Country or area · Location precision: RegionalEvidence
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