4.9

M4.9 Earthquake 22 km SSW of Gusong, ChinaMay 3, 2023

2023-05-03 05:04:06 UTC (2023-05-03) · approx. 12:04 PM UTC+7 local

MagnitudeM4.9(mb)
Time05:04 UTC12:04 PM UTC+7
Depth49.7 kmshallow crustal
Coordinates28.120°, 105.157°
Felt byNo felt reports
Status✓ Reviewed by USGS

On May 3, 2023 at 05:04 UTC, a magnitude 4.9 shallow crustal earthquake struck 22 km SSW of Gusong, China, at a depth of 49.7 km and coordinates 28.1196°, 105.1572°. This earthquake was detected by 106 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 28.12°, 105.16°

Earthquake Details

Magnitude
4.9 mb
Depth
49.7 km
shallow crustal
Location
28.1196°N
105.1572°E

Technical Information

Event ID
us7000jxp5
Event Type
earthquake
Status
✓ Reviewed
Significance
369
Stations Used
106
Azimuthal Gap
32.0°
Min Station Distance
4.358°
RMS Residual
0.82 sec
Last Updated
2023-07-15 22:11:01 UTC

Common Questions

How strong was the magnitude 4.9 earthquake near Gusong, China?

The magnitude 4.9 earthquake that struck 22 km SSW of Gusong, China on May 3, 2023 at 05:04 UTC had a depth of 49.7 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 28.1196°, 105.1572°, which is 22 km SSW of Gusong, China.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000jxp5). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, May 3, 2023). M4.9 Earthquake 22 km SSW of Gusong, ChinaMay 3, 2023. Retrieved July 15, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000jxp5/