4.2

M4.2 Earthquake 83 km ESE of Yujing, TaiwanDecember 24, 2025

2025-12-24 19:41:12 UTC (2025-12-24) · approx. 3:41 AM UTC+8 local

MagnitudeM4.2(mwr)
Time19:41 UTC3:41 AM UTC+8
Depth7.1 kmshallow crustal
Coordinates22.873°, 121.225°
Felt byNo felt reports
Status✓ Reviewed by USGS

On December 24, 2025 at 19:41 UTC, a magnitude 4.2 shallow crustal earthquake struck 83 km ESE of Yujing, Taiwan, at a depth of 7.1 km and coordinates 22.8735°, 121.2247°.

Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 22.87°, 121.22°

Earthquake Details

Magnitude
4.2 mwr
Depth
7.1 km
shallow crustal
Location
22.8735°N
121.2247°E

Technical Information

Event ID
us7000rkl6
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Stations Used
43
Azimuthal Gap
78.0°
Min Station Distance
0.145°
RMS Residual
0.71 sec
Last Updated
2026-04-01 22:48:03 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Yujing, Taiwan?

The magnitude 4.2 earthquake that struck 83 km ESE of Yujing, Taiwan on December 24, 2025 at 19:41 UTC had a depth of 7.1 km. For context, this was a light earthquake commonly felt near the epicenter.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 earthquakes can continue for several days and gradually diminish over time.

What should I do after an earthquake?

If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.

Authoritative source: USGS event page (event ID: us7000rkl6). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, December 24, 2025). M4.2 Earthquake 83 km ESE of Yujing, TaiwanDecember 24, 2025. Retrieved May 23, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000rkl6/