M3.9 Earthquake 33 km S of Boca de Yuma, Dominican Republic — July 16, 2021
2021-07-16 21:15:24 UTC (2021-07-16) · approx. 4:15 PM UTC-5 local
On July 16, 2021 at 21:15 UTC, a magnitude 3.9 intermediate depth earthquake struck 33 km S of Boca de Yuma, Dominican Republic, at a depth of 134.0 km and coordinates 18.0730°, -68.6280°.
Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 9.3 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 278 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-68.6280°E
Technical Information
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Common Questions
How strong was the magnitude 3.9 earthquake near Boca de Yuma, Dominican Republic?
The magnitude 3.9 earthquake that struck 33 km S of Boca de Yuma, Dominican Republic on July 16, 2021 at 21:15 UTC had a depth of 134.0 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.9 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.9 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr2021197005). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, July 16, 2021). M3.9 Earthquake 33 km S of Boca de Yuma, Dominican Republic — July 16, 2021. Retrieved September 25, 2021 from https://www.earthquaketracker.org/earthquakes/event/pr2021197005/