M4.0 Earthquake 60 km N of Namuac, Philippines — September 12, 2022
2022-09-12 20:08:06 UTC (2022-09-12) · approx. 4:08 AM UTC+8 local
On September 12, 2022 at 20:08 UTC, a magnitude 4.0 shallow crustal earthquake struck 60 km N of Namuac, Philippines, at a depth of 39.0 km and coordinates 19.1529°, 121.1244°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
121.1244°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Namuac, Philippines?
The magnitude 4.0 earthquake that struck 60 km N of Namuac, Philippines on September 12, 2022 at 20:08 UTC had a depth of 39.0 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000i9h4). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, September 12, 2022). M4.0 Earthquake 60 km N of Namuac, Philippines — September 12, 2022. Retrieved November 19, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000i9h4/