M4.9 Earthquake 103 km S of Ust’-Kamchatsk Staryy, Russia — August 21, 2022
2022-08-21 23:15:57 UTC (2022-08-21) · approx. 10:15 AM UTC+11 local
On August 21, 2022 at 23:15 UTC, a magnitude 4.9 shallow crustal earthquake struck 103 km S of Ust’-Kamchatsk Staryy, Russia, at a depth of 53.6 km and coordinates 55.3175°, 162.1838°. This earthquake was detected by 148 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 369, 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
Earthquake Details
162.1838°E
Technical Information
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Common Questions
How strong was the magnitude 4.9 earthquake near Ust’-Kamchatsk Staryy, Russia?
The magnitude 4.9 earthquake that struck 103 km S of Ust’-Kamchatsk Staryy, Russia on August 21, 2022 at 23:15 UTC had a depth of 53.6 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 55.3175°, 162.1838°, which is 103 km S of Ust’-Kamchatsk Staryy, 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: us6000icll). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, August 21, 2022). M4.9 Earthquake 103 km S of Ust’-Kamchatsk Staryy, Russia — August 21, 2022. Retrieved November 1, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000icll/