M5.8 Earthquake 140 km ESE of Petropavlovsk-Kamchatsky, Russia — June 20, 2026
2026-06-20 03:49:06 UTC (2 hours ago) · approx. 2:49 PM UTC+11 local
Maximum shaking intensity MMI 4.0 (moderate). Aftershock of the M6.6 mainshock.
On June 20, 2026 at 03:49 UTC, a magnitude 5.8 shallow crustal earthquake struck 140 km ESE of Petropavlovsk-Kamchatsky, Russia, at a depth of 35.0 km and coordinates 52.7287°, 160.6412°. This earthquake was detected by 84 seismic stations with good location accuracy and was assigned a USGS significance rating of 518, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.8 releases seismic energy equivalent to roughly 8 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 6.1 km — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 6.6 mainshock that occurred 23 hours ago 133 km ESE of Petropavlovsk-Kamchatsky, Russia. Since the mainshock, the USGS has recorded 1 aftershocks in this area. Aftershock activity is expected to continue for weeks to months as stresses on surrounding faults redistribute.
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
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Earthquake Details
160.6412°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.8 earthquake near Petropavlovsk-Kamchatsky, Russia?
The magnitude 5.8 earthquake that struck 140 km ESE of Petropavlovsk-Kamchatsky, Russia on June 20, 2026 at 03:49 UTC had a depth of 35.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 52.7287°, 160.6412°, which is 140 km ESE of Petropavlovsk-Kamchatsky, Russia. View all earthquakes in Russia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.8 earthquakes can continue for days to weeks and gradually diminish over time.
Is this the same earthquake as the M6.6 one earlier?
No. This magnitude 5.8 earthquake is an aftershock of the larger magnitude 6.6 mainshock that occurred earlier 133 km ESE of Petropavlovsk-Kamchatsky, Russia. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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 5.8 event is significantly smaller than that historical record.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us7000susb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, June 20, 2026). M5.8 Earthquake 140 km ESE of Petropavlovsk-Kamchatsky, Russia — June 20, 2026. Retrieved June 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000susb/