M3.0 Earthquake 53 km N of Brenas, Puerto Rico — February 16, 2021
2021-02-16 23:04:18 UTC (2021-02-16) · approx. 7:04 PM UTC-4 local
On February 16, 2021 at 23:04 UTC, a magnitude 3.0 shallow crustal earthquake struck 53 km N of Brenas, Puerto Rico, at a depth of 39.0 km and coordinates 18.9455°, -66.2846°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 494 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 72 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.2846°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Brenas, Puerto Rico?
The magnitude 3.0 earthquake that struck 53 km N of Brenas, Puerto Rico on February 16, 2021 at 23:04 UTC had a depth of 39.0 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 3.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr2021047013). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, February 16, 2021). M3.0 Earthquake 53 km N of Brenas, Puerto Rico — February 16, 2021. Retrieved February 16, 2021 from https://www.earthquaketracker.org/earthquakes/event/pr2021047013/