M4.2 Earthquake 5 km ESE of Puro, Philippines — July 23, 2021
2021-07-23 21:04:06 UTC (2021-07-23) · approx. 5:04 AM UTC+8 local
On July 23, 2021 at 21:04 UTC, a magnitude 4.2 intermediate depth earthquake struck 5 km ESE of Puro, Philippines, at a depth of 285.3 km and coordinates 12.4700°, 123.4295°.
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
123.4295°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near Puro, Philippines?
The magnitude 4.2 earthquake that struck 5 km ESE of Puro, Philippines on July 23, 2021 at 21:04 UTC had a depth of 285.3 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: us6000ezvd). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, July 23, 2021). M4.2 Earthquake 5 km ESE of Puro, Philippines — July 23, 2021. Retrieved October 3, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000ezvd/