4.6

M4.6 Earthquake 88 km W of Aykol, China — April 1, 2021

2021-04-01 19:20:06 UTC (2021-04-01) · approx. 12:20 AM UTC+5 local

MagnitudeM4.6(mb)
Time19:20 UTC≈ 12:20 AM UTC+5
Depth11.8 kmshallow crustal
Coordinates40.909°, 79.090°
Felt byNo felt reports
Status✓ Reviewed by USGS

On April 1, 2021 at 19:20 UTC, a magnitude 4.6 shallow crustal earthquake struck 88 km W of Aykol, China, at a depth of 11.8 km and coordinates 40.9088°, 79.0898°.

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 40.91°, 79.09°

Earthquake Details

Magnitude
4.6 mb
Depth
11.8 km
shallow crustal
Location
40.9088°N
79.0898°E

Technical Information

Event ID
us6000dycm
Event Type
earthquake
Status
✓ Reviewed
Significance
326
Azimuthal Gap
62.0°
Min Station Distance
0.307°
RMS Residual
0.53 sec
Last Updated
2021-06-08 17:59:51 UTC

Common Questions

How strong was the magnitude 4.6 earthquake near Aykol, China?

The magnitude 4.6 earthquake that struck 88 km W of Aykol, China on April 1, 2021 at 19:20 UTC had a depth of 11.8 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 40.9088°, 79.0898°, which is 88 km W of Aykol, 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: us6000dycm). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, April 1, 2021). M4.6 Earthquake 88 km W of Aykol, China — April 1, 2021. Retrieved June 8, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000dycm/