M3.8 Earthquake 74 km N of Isabela, Puerto Rico — March 31, 2024
2024-03-31 15:18:51 UTC (2024-03-31) · approx. 11:18 AM UTC-4 local
On March 31, 2024 at 15:18 UTC, a magnitude 3.8 shallow crustal earthquake struck 74 km N of Isabela, Puerto Rico, at a depth of 5.0 km and coordinates 19.1636°, -67.1160°.
Physical scale: An earthquake of magnitude 3.8 releases seismic energy equivalent to roughly 6.4 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 233 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-67.1160°E
Technical Information
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Common Questions
How strong was the magnitude 3.8 earthquake near Isabela, Puerto Rico?
The magnitude 3.8 earthquake that struck 74 km N of Isabela, Puerto Rico on March 31, 2024 at 15:18 UTC had a depth of 5.0 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 3.8 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.8 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: pr2024091002). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, March 31, 2024). M3.8 Earthquake 74 km N of Isabela, Puerto Rico — March 31, 2024. Retrieved June 1, 2024 from https://www.earthquaketracker.org/earthquakes/event/pr2024091002/