M4.5 Earthquake 69 km WSW of Abra Pampa, Argentina — October 8, 2023
2023-10-08 22:41:13 UTC (2023-10-08) · approx. 6:41 PM UTC-4 local
On October 8, 2023 at 22:41 UTC, a magnitude 4.5 intermediate depth earthquake struck 69 km WSW of Abra Pampa, Argentina, at a depth of 235.1 km and coordinates -22.9548°, -66.3249°. This earthquake was detected by 45 seismic stations with good location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.3249°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.5 earthquake near Abra Pampa, Argentina?
The magnitude 4.5 earthquake that struck 69 km WSW of Abra Pampa, Argentina on October 8, 2023 at 22:41 UTC had a depth of 235.1 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -22.9548°, -66.3249°, which is 69 km WSW of Abra Pampa, Argentina.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000le44). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 8, 2023). M4.5 Earthquake 69 km WSW of Abra Pampa, Argentina — October 8, 2023. Retrieved December 16, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000le44/