M4.2 Earthquake 148 km S of Morant Bay, Jamaica — June 27, 2021
2021-06-27 20:09:49 UTC (2021-06-27) · approx. 3:09 PM UTC-5 local
On June 27, 2021 at 20:09 UTC, a magnitude 4.2 shallow crustal earthquake struck 148 km S of Morant Bay, Jamaica, at a depth of 10.0 km and coordinates 16.5489°, -76.2770°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-76.2770°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Morant Bay, Jamaica?
The magnitude 4.2 earthquake that struck 148 km S of Morant Bay, Jamaica on June 27, 2021 at 20:09 UTC had a depth of 10.0 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000eqbb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, June 27, 2021). M4.2 Earthquake 148 km S of Morant Bay, Jamaica — June 27, 2021. Retrieved September 9, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000eqbb/