M4.9 Earthquake 17 km SSW of Vilyuchinsk, Russia — April 11, 2023
2023-04-11 11:39:19 UTC (2023-04-11) · approx. 10:39 PM UTC+11 local
Felt by 3 people across nearby locations.
On April 11, 2023 at 11:39 UTC, a magnitude 4.9 intermediate depth earthquake struck 17 km SSW of Vilyuchinsk, Russia, at a depth of 114.2 km and coordinates 52.7915°, 158.2760°. This earthquake was detected by 186 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 371, 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 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
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 3 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
158.2760°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Vilyuchinsk, Russia?
The magnitude 4.9 earthquake that struck 17 km SSW of Vilyuchinsk, Russia on April 11, 2023 at 11:39 UTC had a depth of 114.2 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 52.7915°, 158.2760°, which is 17 km SSW of Vilyuchinsk, Russia. View all earthquakes in Russia.
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 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 4.9 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000k3h7). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 11, 2023). M4.9 Earthquake 17 km SSW of Vilyuchinsk, Russia — April 11, 2023. Retrieved June 17, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k3h7/