M4.2 Earthquake 18 km SSW of Rasht, Iran — August 12, 2022
2022-08-12 18:21:10 UTC (2022-08-12) · approx. 9:21 PM UTC+3 local
On August 12, 2022 at 18:21 UTC, a magnitude 4.2 shallow crustal earthquake struck 18 km SSW of Rasht, Iran, at a depth of 10.0 km and coordinates 37.1160°, 49.5328°.
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.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 2 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
49.5328°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Rasht, Iran?
The magnitude 4.2 earthquake that struck 18 km SSW of Rasht, Iran on August 12, 2022 at 18:21 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Location
Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000iabi). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, August 12, 2022). M4.2 Earthquake 18 km SSW of Rasht, Iran — August 12, 2022. Retrieved October 21, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000iabi/