M4.1 Earthquake 190 km SE of Tabiauan, Philippines — April 20, 2023
2023-04-20 21:27:22 UTC (2023-04-20) · approx. 5:27 AM UTC+8 local
On April 20, 2023 at 21:27 UTC, a magnitude 4.1 deep-focus earthquake struck 190 km SE of Tabiauan, Philippines, at a depth of 583.6 km and coordinates 4.6374°, 122.9090°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
122.9090°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.1 earthquake near Tabiauan, Philippines?
The magnitude 4.1 earthquake that struck 190 km SE of Tabiauan, Philippines on April 20, 2023 at 21:27 UTC had a depth of 583.6 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000jw9d). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 20, 2023). M4.1 Earthquake 190 km SE of Tabiauan, Philippines — April 20, 2023. Retrieved July 3, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000jw9d/