M4.3 Earthquake 45 km SW of Borūjen, Iran — May 31, 2023
2023-05-31 15:22:18 UTC (2023-05-31) · approx. 6:22 PM UTC+3 local
On May 31, 2023 at 15:22 UTC, a magnitude 4.3 shallow crustal earthquake struck 45 km SW of Borūjen, Iran, at a depth of 10.0 km and coordinates 31.6961°, 50.9183°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
50.9183°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Borūjen, Iran?
The magnitude 4.3 earthquake that struck 45 km SW of Borūjen, Iran on May 31, 2023 at 15:22 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000k59l). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, May 31, 2023). M4.3 Earthquake 45 km SW of Borūjen, Iran — May 31, 2023. Retrieved August 5, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000k59l/