M4.5 Earthquake 18 km NNW of Yongning, China — October 23, 2026
2026-10-23 02:17:01 UTC (1 hour ago) · approx. 9:17 AM UTC+7 local
Felt by 1 person across nearby locations.
On October 23, 2026 at 02:17 UTC, a magnitude 4.5 shallow crustal earthquake struck 18 km NNW of Yongning, China, at a depth of 10.0 km and coordinates 27.9986°, 100.6189°. This earthquake was detected by 37 seismic stations with good location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
100.6189°E
Technical Information
Common Questions
How strong was the magnitude 4.5 earthquake near Yongning, China?
The magnitude 4.5 earthquake that struck 18 km NNW of Yongning, China on October 23, 2026 at 02:17 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 27.9986°, 100.6189°, which is 18 km NNW of Yongning, China.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Authoritative source: USGS event page (event ID: us6000u49a). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, October 23, 2026). M4.5 Earthquake 18 km NNW of Yongning, China — October 23, 2026. Retrieved October 23, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000u49a/