M4.2 Earthquake 90 km SSE of Kūh Sefīd, Iran — June 21, 2026
2026-06-21 03:22:35 UTC (2026-06-21) · approx. 7:22 AM UTC+4 local
On June 21, 2026 at 03:22 UTC, a magnitude 4.2 intermediate depth earthquake struck 90 km SSE of Kūh Sefīd, Iran, at a depth of 87.2 km and coordinates 28.5060°, 57.1229°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
57.1229°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Kūh Sefīd, Iran?
The magnitude 4.2 earthquake that struck 90 km SSE of Kūh Sefīd, Iran on June 21, 2026 at 03:22 UTC had a depth of 87.2 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000t8hh). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, June 21, 2026). M4.2 Earthquake 90 km SSE of Kūh Sefīd, Iran — June 21, 2026. Retrieved July 9, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000t8hh/