M4.9 Earthquake 68 km E of Hualien City, Taiwan — October 14, 2023
2023-10-14 07:53:30 UTC (2023-10-14) · approx. 3:53 PM UTC+8 local
Felt by 9 people across nearby locations.
On October 14, 2023 at 07:53 UTC, a magnitude 4.9 shallow crustal earthquake struck 68 km E of Hualien City, Taiwan, at a depth of 20.4 km and coordinates 23.9848°, 122.2738°. This earthquake was detected by 94 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 371, 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.
The epicenter is located in Taiwan, a region characterized by the collision of the Luzon volcanic arc with the Eurasian continental margin, where the Philippine Sea Plate converges at 80 mm per year. View all earthquakes in Taiwan.
Learn more: Magnitude scale · Aftershock sequences
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 9 citizen responses 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
122.2738°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Hualien City, Taiwan?
The magnitude 4.9 earthquake that struck 68 km E of Hualien City, Taiwan on October 14, 2023 at 07:53 UTC had a depth of 20.4 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 23.9848°, 122.2738°, which is 68 km E of Hualien City, Taiwan. View all earthquakes in Taiwan.
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.
Has Taiwan had earthquakes this big before?
The largest recorded earthquake in Taiwan was the M7.6 Chi-Chi earthquake of September 21, 1999. Today's magnitude 4.9 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000lfi5). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 14, 2023). M4.9 Earthquake 68 km E of Hualien City, Taiwan — October 14, 2023. Retrieved December 16, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000lfi5/