M4.9 Earthquake 95 km W of Gejiu, China — November 18, 2022
2022-11-18 17:27:37 UTC (2022-11-18) · approx. 12:27 AM UTC+7 local
On November 18, 2022 at 17:27 UTC, a magnitude 4.9 shallow crustal earthquake struck 95 km W of Gejiu, China, at a depth of 15.6 km and coordinates 23.4502°, 102.2291°. This earthquake was detected by 136 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.
Earthquake Details
102.2291°E
Technical Information
Common Questions
How strong was the magnitude 4.9 earthquake near Gejiu, China?
The magnitude 4.9 earthquake that struck 95 km W of Gejiu, China on November 18, 2022 at 17:27 UTC had a depth of 15.6 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 23.4502°, 102.2291°, which is 95 km W of Gejiu, 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.
Actions
Location
Authoritative source: USGS event page (event ID: us7000iqt1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, November 18, 2022). M4.9 Earthquake 95 km W of Gejiu, China — November 18, 2022. Retrieved January 28, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000iqt1/