M4.7 Earthquake 177 km E of Kuril’sk, Russia — July 30, 2023
2023-07-30 22:18:37 UTC (2023-07-30) · approx. 8:18 AM UTC+10 local
On July 30, 2023 at 22:18 UTC, a magnitude 4.7 shallow crustal earthquake struck 177 km E of Kuril’sk, Russia, at a depth of 35.0 km and coordinates 45.3114°, 150.1343°. This earthquake was detected by 168 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Russia, a region characterized by the Kuril-Kamchatka subduction zone on the northwestern Pacific Ring of Fire. The nearest mapped fault system is the Kuril-Kamchatka Trench. View all earthquakes in Russia.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
150.1343°E
Technical Information
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Common Questions
How strong was the magnitude 4.7 earthquake near Kuril’sk, Russia?
The magnitude 4.7 earthquake that struck 177 km E of Kuril’sk, Russia on July 30, 2023 at 22:18 UTC had a depth of 35.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 45.3114°, 150.1343°, which is 177 km E of Kuril’sk, Russia. View all earthquakes in Russia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Has Russia had earthquakes this big before?
The largest recorded earthquake in Russia was the M9.0 Kamchatka earthquake of November 4, 1952. Today's magnitude 4.7 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000kwrp). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, July 30, 2023). M4.7 Earthquake 177 km E of Kuril’sk, Russia — July 30, 2023. Retrieved October 7, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kwrp/