M4.8 Earthquake 142 km SSW of Merizo Village, Guam — September 11, 2021
2021-09-11 14:19:10 UTC (2021-09-11) · approx. 12:19 AM UTC+10 local
On September 11, 2021 at 14:19 UTC, a magnitude 4.8 shallow crustal earthquake struck 142 km SSW of Merizo Village, Guam, at a depth of 10.0 km and coordinates 12.0218°, 144.3188°.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
144.3188°E
Technical Information
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Common Questions
How strong was the magnitude 4.8 earthquake near Merizo Village, Guam?
The magnitude 4.8 earthquake that struck 142 km SSW of Merizo Village, Guam on September 11, 2021 at 14:19 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 12.0218°, 144.3188°, which is 142 km SSW of Merizo Village, Guam.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000fac1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, September 11, 2021). M4.8 Earthquake 142 km SSW of Merizo Village, Guam — September 11, 2021. Retrieved November 23, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000fac1/