M3.2 Earthquake 3 km SSW of Indios, Puerto Rico — June 15, 2021
2021-06-15 20:46:04 UTC (2021-06-15) · approx. 4:46 PM UTC-4 local
On June 15, 2021 at 20:46 UTC, a magnitude 3.2 shallow crustal earthquake struck 3 km SSW of Indios, Puerto Rico, at a depth of 16.0 km and coordinates 17.9660°, -66.8325°.
Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 888 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 94 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.8325°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Indios, Puerto Rico?
The magnitude 3.2 earthquake that struck 3 km SSW of Indios, Puerto Rico on June 15, 2021 at 20:46 UTC had a depth of 16.0 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 3.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.2 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr2021166013). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, June 15, 2021). M3.2 Earthquake 3 km SSW of Indios, Puerto Rico — June 15, 2021. Retrieved August 26, 2021 from https://www.earthquaketracker.org/earthquakes/event/pr2021166013/