4.9

M4.9 Earthquake 32 km E of Yilan, TaiwanFebruary 25, 2024

2024-02-25 13:48:32 UTC (2024-02-25) · approx. 9:48 PM UTC+8 local

Felt by 25 people across nearby locations.

MagnitudeM4.9(mww)
Time13:48 UTC9:48 PM UTC+8
Depth7.6 kmshallow crustal
Coordinates24.796°, 122.075°
Felt by25DYFI responses
Status✓ Reviewed by USGS

On February 25, 2024 at 13:48 UTC, a magnitude 4.9 shallow crustal earthquake struck 32 km E of Yilan, Taiwan, at a depth of 7.6 km and coordinates 24.7957°, 122.0753°. This earthquake was detected by 61 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 378, 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

Map showing earthquake epicenter at 24.80°, 122.08°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 25 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M4.9 earthquake near 32 km E of Yilan, Taiwan

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
4.9 mww
Depth
7.6 km
shallow crustal
Location
24.7957°N
122.0753°E
Felt Reports
25
DYFI responses
Community Intensity
3.3
CDI from reports

Technical Information

Event ID
us7000m1i1
Event Type
earthquake
Status
✓ Reviewed
Significance
378
Stations Used
61
Azimuthal Gap
59.0°
Min Station Distance
0.554°
RMS Residual
0.73 sec
Last Updated
2024-05-02 15:50:14 UTC

Common Questions

How strong was the magnitude 4.9 earthquake near Yilan, Taiwan?

The magnitude 4.9 earthquake that struck 32 km E of Yilan, Taiwan on February 25, 2024 at 13:48 UTC had a depth of 7.6 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 24.7957°, 122.0753°, which is 32 km E of Yilan, 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: us7000m1i1). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, February 25, 2024). M4.9 Earthquake 32 km E of Yilan, TaiwanFebruary 25, 2024. Retrieved May 2, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000m1i1/