M4.6 Earthquake 8 km NNE of Guaca, Colombia — July 21, 2020
2020-07-21 21:40:11 UTC (2020-07-21) · approx. 4:40 PM UTC-5 local
Felt by 7 people across nearby locations.
On July 21, 2020 at 21:40 UTC, a magnitude 4.6 intermediate depth earthquake struck 8 km NNE of Guaca, Colombia, at a depth of 173.3 km and coordinates 6.9523°, -72.8355°.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 7 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-72.8355°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.6 earthquake near Guaca, Colombia?
The magnitude 4.6 earthquake that struck 8 km NNE of Guaca, Colombia on July 21, 2020 at 21:40 UTC had a depth of 173.3 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 6.9523°, -72.8355°, which is 8 km NNE of Guaca, Colombia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us7000asp1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 21, 2020). M4.6 Earthquake 8 km NNE of Guaca, Colombia — July 21, 2020. Retrieved September 26, 2020 from https://www.earthquaketracker.org/earthquakes/event/us7000asp1/