4.3

M4.3 Earthquake northwest of the Kuril IslandsAugust 1, 2022

2022-08-01 18:01:13 UTC (2022-08-01) · approx. 4:01 AM UTC+10 local

MagnitudeM4.3(mb)
Time18:01 UTC4:01 AM UTC+10
Depth478.5 kmdeep-focus
Coordinates50.506°, 150.510°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 1, 2022 at 18:01 UTC, a magnitude 4.3 deep-focus earthquake struck northwest of the Kuril Islands, at a depth of 478.5 km and coordinates 50.5059°, 150.5104°.

Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 50.51°, 150.51°

Earthquake Details

Magnitude
4.3 mb
Depth
478.5 km
deep-focus
Location
50.5059°N
150.5104°E

Technical Information

Event ID
us6000i77p
Event Type
earthquake
Status
✓ Reviewed
Significance
284
Stations Used
119
Azimuthal Gap
118.0°
Min Station Distance
5.165°
RMS Residual
0.90 sec
Last Updated
2022-10-12 14:49:37 UTC

Common Questions

How strong was the magnitude 4.3 earthquake northwest of the Kuril Islands?

The magnitude 4.3 earthquake that struck northwest of the Kuril Islands on August 1, 2022 at 18:01 UTC had a depth of 478.5 km. For context, this was a light earthquake commonly felt near the epicenter.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.3 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.3 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000i77p). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, August 1, 2022). M4.3 Earthquake northwest of the Kuril IslandsAugust 1, 2022. Retrieved October 12, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000i77p/