M4.5 Earthquake 40 km NW of Shahrak-e Kūlūrī, Iran — August 13, 2026
2026-08-13 21:23:48 UTC (2026-08-13) · approx. 12:23 AM UTC+3 local
On August 13, 2026 at 21:23 UTC, a magnitude 4.5 shallow crustal earthquake struck 40 km NW of Shahrak-e Kūlūrī, Iran, at a depth of 10.0 km and coordinates 32.5666°, 48.1175°. This earthquake was detected by 67 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 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
48.1175°E
Technical Information
Common Questions
How strong was the magnitude 4.5 earthquake near Shahrak-e Kūlūrī, Iran?
The magnitude 4.5 earthquake that struck 40 km NW of Shahrak-e Kūlūrī, Iran on August 13, 2026 at 21:23 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 32.5666°, 48.1175°, which is 40 km NW of Shahrak-e Kūlūrī, Iran. View all earthquakes in Iran.
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 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 4.5 event is significantly smaller than that historical record.
Actions
Location
Authoritative source: USGS event page (event ID: us6000tkju). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 13, 2026). M4.5 Earthquake 40 km NW of Shahrak-e Kūlūrī, Iran — August 13, 2026. Retrieved August 31, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tkju/