M4.6 Earthquake 230 km NNW of Rio Preto da Eva, Brazil — May 27, 2023
2023-05-27 03:27:51 UTC (2023-05-27) · approx. 11:27 PM UTC-4 local
On May 27, 2023 at 03:27 UTC, a magnitude 4.6 shallow crustal earthquake struck 230 km NNW of Rio Preto da Eva, Brazil, at a depth of 10.0 km and coordinates -0.7027°, -60.2934°. This earthquake was detected by 32 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-60.2934°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Rio Preto da Eva, Brazil?
The magnitude 4.6 earthquake that struck 230 km NNW of Rio Preto da Eva, Brazil on May 27, 2023 at 03:27 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -0.7027°, -60.2934°, which is 230 km NNW of Rio Preto da Eva, Brazil.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000k5r6). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, May 27, 2023). M4.6 Earthquake 230 km NNW of Rio Preto da Eva, Brazil — May 27, 2023. Retrieved July 29, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000k5r6/