M4.9 Earthquake 79 km SSW of Fīrūzābād, Iran — January 23, 2025
2025-01-23 05:42:13 UTC (2025-01-23) · approx. 8:42 AM UTC+3 local
On January 23, 2025 at 05:42 UTC, a magnitude 4.9 shallow crustal earthquake struck 79 km SSW of Fīrūzābād, Iran, at a depth of 10.0 km and coordinates 28.1788°, 52.2703°. This earthquake was detected by 126 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Iran, a region characterized by the Zagros fold-and-thrust belt, where the Arabian Plate collides with Eurasia at 20-25 mm per year. The nearest mapped fault system is the Zagros Fault. View all earthquakes in Iran.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
52.2703°E
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Common Questions
How strong was the magnitude 4.9 earthquake near Fīrūzābād, Iran?
The magnitude 4.9 earthquake that struck 79 km SSW of Fīrūzābād, Iran on January 23, 2025 at 05:42 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 28.1788°, 52.2703°, which is 79 km SSW of Fīrūzābād, Iran. View all earthquakes in Iran.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.
Has Iran had earthquakes this big before?
The largest recorded earthquake in Iran was the M7.8 Tabas earthquake of September 16, 1978. Today's magnitude 4.9 event is significantly smaller than that historical record.
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Location
Authoritative source: USGS event page (event ID: us6000plru). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, January 23, 2025). M4.9 Earthquake 79 km SSW of Fīrūzābād, Iran — January 23, 2025. Retrieved April 8, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000plru/