4.6

M4.6 Earthquake near southern Xinjiang, ChinaFebruary 27, 2023

2023-02-27 19:36:02 UTC (2023-02-27) · approx. 12:36 AM UTC+5 local

MagnitudeM4.6(mb)
Time19:36 UTC12:36 AM UTC+5
Depth10.0 kmshallow crustal
Coordinates39.405°, 74.080°
Felt byNo felt reports
Status✓ Reviewed by USGS

On February 27, 2023 at 19:36 UTC, a magnitude 4.6 shallow crustal earthquake struck near southern Xinjiang, China, at a depth of 10.0 km and coordinates 39.4048°, 74.0804°. This earthquake was detected by 65 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 39.40°, 74.08°

Earthquake Details

Magnitude
4.6 mb
Depth
10.0 km
shallow crustal
Location
39.4048°N
74.0804°E

Technical Information

Event ID
us7000jg36
Event Type
earthquake
Status
✓ Reviewed
Significance
326
Stations Used
65
Azimuthal Gap
75.0°
Min Station Distance
1.768°
RMS Residual
1.00 sec
Last Updated
2023-05-08 01:59:46 UTC

Common Questions

How strong was the magnitude 4.6 earthquake near southern Xinjiang, China?

The magnitude 4.6 earthquake that struck near southern Xinjiang, China on February 27, 2023 at 19:36 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 39.4048°, 74.0804°, which is near southern Xinjiang, China.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000jg36). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, February 27, 2023). M4.6 Earthquake near southern Xinjiang, ChinaFebruary 27, 2023. Retrieved May 8, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000jg36/