M4.3 Earthquake 34 km NE of Codrington, Antigua and Barbuda — September 28, 2022
2022-09-28 21:34:05 UTC (2022-09-28) · approx. 5:34 PM UTC-4 local
On September 28, 2022 at 21:34 UTC, a magnitude 4.3 shallow crustal earthquake struck 34 km NE of Codrington, Antigua and Barbuda, at a depth of 29.7 km and coordinates 17.8209°, -61.5697°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-61.5697°E
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Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near Codrington, Antigua and Barbuda?
The magnitude 4.3 earthquake that struck 34 km NE of Codrington, Antigua and Barbuda on September 28, 2022 at 21:34 UTC had a depth of 29.7 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000ip2v). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, September 28, 2022). M4.3 Earthquake 34 km NE of Codrington, Antigua and Barbuda — September 28, 2022. Retrieved December 3, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000ip2v/