4.0

M4.0 Earthquake 24 km SSE of Hualien City, TaiwanAugust 16, 2024

2024-08-16 20:41:27 UTC (2024-08-16) · approx. 4:41 AM UTC+8 local

MagnitudeM4.0(mwr)
Time20:41 UTC4:41 AM UTC+8
Depth17.7 kmshallow crustal
Coordinates23.770°, 121.690°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 16, 2024 at 20:41 UTC, a magnitude 4.0 shallow crustal earthquake struck 24 km SSE of Hualien City, Taiwan, at a depth of 17.7 km and coordinates 23.7699°, 121.6902°.

Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 23.77°, 121.69°

Earthquake Details

Magnitude
4.0 mwr
Depth
17.7 km
shallow crustal
Location
23.7699°N
121.6902°E

Technical Information

Event ID
us7000n7i1
Event Type
earthquake
Status
✓ Reviewed
Significance
246
Stations Used
31
Azimuthal Gap
65.0°
Min Station Distance
0.411°
RMS Residual
0.63 sec
Last Updated
2024-10-26 15:49:04 UTC

Common Questions

How strong was the magnitude 4.0 earthquake near Hualien City, Taiwan?

The magnitude 4.0 earthquake that struck 24 km SSE of Hualien City, Taiwan on August 16, 2024 at 20:41 UTC had a depth of 17.7 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 4.0 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.0 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000n7i1). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, August 16, 2024). M4.0 Earthquake 24 km SSE of Hualien City, TaiwanAugust 16, 2024. Retrieved October 26, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000n7i1/