M4.4 Earthquake 29 km NE of Santa Monica, Philippines — May 9, 2023
2023-05-09 20:33:27 UTC (2023-05-09) · approx. 4:33 AM UTC+8 local
On May 9, 2023 at 20:33 UTC, a magnitude 4.4 shallow crustal earthquake struck 29 km NE of Santa Monica, Philippines, at a depth of 42.8 km and coordinates 10.1702°, 126.2614°.
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
126.2614°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.4 earthquake near Santa Monica, Philippines?
The magnitude 4.4 earthquake that struck 29 km NE of Santa Monica, Philippines on May 9, 2023 at 20:33 UTC had a depth of 42.8 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: us6000kbg3). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, May 9, 2023). M4.4 Earthquake 29 km NE of Santa Monica, Philippines — May 9, 2023. Retrieved July 22, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kbg3/