M3.8 Earthquake 9 km SE of Ramón Santana, Dominican Republic — October 18, 2023
2023-10-18 22:47:23 UTC (2023-10-18) · approx. 5:47 PM UTC-5 local
On October 18, 2023 at 22:47 UTC, a magnitude 3.8 intermediate depth earthquake struck 9 km SE of Ramón Santana, Dominican Republic, at a depth of 148.9 km and coordinates 18.4902°, -69.1029°.
Physical scale: An earthquake of magnitude 3.8 releases seismic energy equivalent to roughly 7.6 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 252 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-69.1029°E
Technical Information
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Common Questions
How strong was the magnitude 3.8 earthquake near Ramón Santana, Dominican Republic?
The magnitude 3.8 earthquake that struck 9 km SE of Ramón Santana, Dominican Republic on October 18, 2023 at 22:47 UTC had a depth of 148.9 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: us6000lgh9). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 18, 2023). M3.8 Earthquake 9 km SE of Ramón Santana, Dominican Republic — October 18, 2023. Retrieved December 26, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000lgh9/