4.8

M4.8 Earthquake near Kuril IslandsFebruary 17, 2023

2023-02-17 11:38:21 UTC (2023-02-17) · approx. 9:38 PM UTC+10 local

MagnitudeM4.8(mb)
Time11:38 UTC9:38 PM UTC+10
Depth146.5 kmintermediate depth
Coordinates48.261°, 153.048°
Felt byNo felt reports
Status✓ Reviewed by USGS

On February 17, 2023 at 11:38 UTC, a magnitude 4.8 intermediate depth earthquake struck near Kuril Islands, at a depth of 146.5 km and coordinates 48.2614°, 153.0480°. This earthquake was detected by 93 seismic stations with good location accuracy and was assigned a USGS significance rating of 354, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 48.26°, 153.05°

Earthquake Details

Magnitude
4.8 mb
Depth
146.5 km
intermediate depth
Location
48.2614°N
153.0480°E

Technical Information

Event ID
us6000jpma
Event Type
earthquake
Status
✓ Reviewed
Significance
354
Stations Used
93
Azimuthal Gap
135.0°
Min Station Distance
5.681°
RMS Residual
0.65 sec
Last Updated
2023-04-22 21:33:16 UTC

Common Questions

How strong was the magnitude 4.8 earthquake near Kuril Islands?

The magnitude 4.8 earthquake that struck near Kuril Islands on February 17, 2023 at 11:38 UTC had a depth of 146.5 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 48.2614°, 153.0480°, which is near Kuril Islands.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000jpma). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, February 17, 2023). M4.8 Earthquake near Kuril IslandsFebruary 17, 2023. Retrieved April 22, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000jpma/