M4.4 Earthquake 63 km W of Labuan, Indonesia — October 21, 2023
2023-10-21 16:41:33 UTC (2023-10-21) · approx. 11:41 PM UTC+7 local
On October 21, 2023 at 16:41 UTC, a magnitude 4.4 shallow crustal earthquake struck 63 km W of Labuan, Indonesia, at a depth of 62.2 km and coordinates -6.4856°, 105.2643°.
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.
Earthquake Details
105.2643°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.4 earthquake near Labuan, Indonesia?
The magnitude 4.4 earthquake that struck 63 km W of Labuan, Indonesia on October 21, 2023 at 16:41 UTC had a depth of 62.2 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.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000l69s). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 21, 2023). M4.4 Earthquake 63 km W of Labuan, Indonesia — October 21, 2023. Retrieved December 26, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000l69s/