4.5

M4.5 Earthquake 33 km SSE of Severomuysk, Russia — July 19, 2021

2021-07-19 22:06:46 UTC (2021-07-19) · approx. 6:06 AM UTC+8 local

MagnitudeM4.5(mb)
Time22:06 UTC≈ 6:06 AM UTC+8
Depth10.0 kmshallow crustal
Coordinates55.861°, 113.589°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 19, 2021 at 22:06 UTC, a magnitude 4.5 shallow crustal earthquake struck 33 km SSE of Severomuysk, Russia, at a depth of 10.0 km and coordinates 55.8613°, 113.5891°.

Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — 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

Map showing earthquake epicenter at 55.86°, 113.59°

Earthquake Details

Magnitude
4.5 mb
Depth
10.0 km
shallow crustal
Location
55.8613°N
113.5891°E

Technical Information

Event ID
us7000enjm
Event Type
earthquake
Status
✓ Reviewed
Significance
312
Azimuthal Gap
40.0°
Min Station Distance
7.227°
RMS Residual
0.89 sec
Last Updated
2021-09-25 21:08:15 UTC

Common Questions

How strong was the magnitude 4.5 earthquake near Severomuysk, Russia?

The magnitude 4.5 earthquake that struck 33 km SSE of Severomuysk, Russia on July 19, 2021 at 22:06 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 55.8613°, 113.5891°, which is 33 km SSE of Severomuysk, Russia. View all earthquakes in Russia.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 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 4.5 event is significantly smaller than that historical record.

Authoritative source: USGS event page (event ID: us7000enjm). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, July 19, 2021). M4.5 Earthquake 33 km SSE of Severomuysk, Russia — July 19, 2021. Retrieved September 25, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000enjm/