M4.6 Earthquake 294 km ESE of Yigo Village, Guam — April 20, 2021
2021-04-20 19:23:15 UTC (2021-04-20) · approx. 5:23 AM UTC+10 local
On April 20, 2021 at 19:23 UTC, a magnitude 4.6 shallow crustal earthquake struck 294 km ESE of Yigo Village, Guam, at a depth of 10.3 km and coordinates 12.2822°, 147.2823°.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
147.2823°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Yigo Village, Guam?
The magnitude 4.6 earthquake that struck 294 km ESE of Yigo Village, Guam on April 20, 2021 at 19:23 UTC had a depth of 10.3 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 12.2822°, 147.2823°, which is 294 km ESE of Yigo Village, Guam.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us6000e512). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, April 20, 2021). M4.6 Earthquake 294 km ESE of Yigo Village, Guam — April 20, 2021. Retrieved July 3, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000e512/