M4.7 Earthquake 21 km NNW of Yigo Village, Guam — August 29, 2021
2021-08-29 22:08:02 UTC (2021-08-29) · approx. 8:08 AM UTC+10 local
On August 29, 2021 at 22:08 UTC, a magnitude 4.7 shallow crustal earthquake struck 21 km NNW of Yigo Village, Guam, at a depth of 69.5 km and coordinates 13.7202°, 144.8297°.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
144.8297°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.7 earthquake near Yigo Village, Guam?
The magnitude 4.7 earthquake that struck 21 km NNW of Yigo Village, Guam on August 29, 2021 at 22:08 UTC had a depth of 69.5 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 13.7202°, 144.8297°, which is 21 km NNW of Yigo Village, Guam.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000f8ya). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, August 29, 2021). M4.7 Earthquake 21 km NNW of Yigo Village, Guam — August 29, 2021. Retrieved November 6, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000f8ya/