M4.5 Earthquake 45 km NE of Santa Rosa, Peru — March 27, 2023
2023-03-27 20:13:14 UTC (2023-03-27) · approx. 3:13 PM UTC-5 local
On March 27, 2023 at 20:13 UTC, a magnitude 4.5 intermediate depth earthquake struck 45 km NE of Santa Rosa, Peru, at a depth of 123.3 km and coordinates -10.6029°, -74.6239°. This earthquake was detected by 49 seismic stations with excellent 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.
The epicenter is located in Peru, a region characterized by the northern Peru-Chile subduction zone, complicated by the subduction of the Nazca Ridge. The nearest mapped fault system is the Peru-Chile Trench. View all earthquakes in Peru.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
-74.6239°E
Technical Information
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Common Questions
How strong was the magnitude 4.5 earthquake near Santa Rosa, Peru?
The magnitude 4.5 earthquake that struck 45 km NE of Santa Rosa, Peru on March 27, 2023 at 20:13 UTC had a depth of 123.3 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -10.6029°, -74.6239°, which is 45 km NE of Santa Rosa, Peru. View all earthquakes in Peru.
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.
Has Peru had earthquakes this big before?
The largest recorded earthquake in Peru was the M8.0 Arequipa earthquake of June 23, 2001. Today's magnitude 4.5 event is significantly smaller than that historical record.
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Location
Authoritative source: USGS event page (event ID: us6000k04g). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, March 27, 2023). M4.5 Earthquake 45 km NE of Santa Rosa, Peru — March 27, 2023. Retrieved June 3, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k04g/