4.4

M4.4 Earthquake 9 km NE of Hualien City, TaiwanApril 4, 2026

2026-04-04 21:23:59 UTC (2026-04-04) · approx. 5:23 AM UTC+8 local

MagnitudeM4.4(mwr)
Time21:23 UTC5:23 AM UTC+8
Depth23.0 kmshallow crustal
Coordinates24.050°, 121.662°
Felt byNo felt reports
Status✓ Reviewed by USGS

On April 4, 2026 at 21:23 UTC, a magnitude 4.4 shallow crustal earthquake struck 9 km NE of Hualien City, Taiwan, at a depth of 23.0 km and coordinates 24.0497°, 121.6619°.

Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 24.05°, 121.66°

Earthquake Details

Magnitude
4.4 mwr
Depth
23.0 km
shallow crustal
Location
24.0497°N
121.6619°E

Technical Information

Event ID
us6000smnq
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Stations Used
52
Azimuthal Gap
84.0°
Min Station Distance
0.138°
RMS Residual
0.67 sec
Last Updated
2026-04-26 02:14:21 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near Hualien City, Taiwan?

The magnitude 4.4 earthquake that struck 9 km NE of Hualien City, Taiwan on April 4, 2026 at 21:23 UTC had a depth of 23.0 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 4.4 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: us6000smnq). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, April 4, 2026). M4.4 Earthquake 9 km NE of Hualien City, TaiwanApril 4, 2026. Retrieved May 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000smnq/