M4.2 Earthquake 101 km SW of Basco, Philippines — May 18, 2022
2022-05-18 18:15:12 UTC (2022-05-18) · approx. 2:15 AM UTC+8 local
On May 18, 2022 at 18:15 UTC, a magnitude 4.2 shallow crustal earthquake struck 101 km SW of Basco, Philippines, at a depth of 34.8 km and coordinates 19.8820°, 121.2086°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
121.2086°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near Basco, Philippines?
The magnitude 4.2 earthquake that struck 101 km SW of Basco, Philippines on May 18, 2022 at 18:15 UTC had a depth of 34.8 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000hc8h). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, May 18, 2022). M4.2 Earthquake 101 km SW of Basco, Philippines — May 18, 2022. Retrieved July 24, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000hc8h/