M4.1 Earthquake 6 km NNW of Khorramabad, Iran — December 31, 2022
2022-12-31 17:05:40 UTC (2022-12-31) · approx. 8:05 PM UTC+3 local
On December 31, 2022 at 17:05 UTC, a magnitude 4.1 shallow crustal earthquake struck 6 km NNW of Khorramabad, Iran, at a depth of 19.3 km and coordinates 33.5482°, 48.3346°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
48.3346°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Khorramabad, Iran?
The magnitude 4.1 earthquake that struck 6 km NNW of Khorramabad, Iran on December 31, 2022 at 17:05 UTC had a depth of 19.3 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000j1a0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, December 31, 2022). M4.1 Earthquake 6 km NNW of Khorramabad, Iran — December 31, 2022. Retrieved March 7, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000j1a0/