M4.6 Earthquake in the Guam region — May 21, 2022
2022-05-21 08:31:12 UTC (2022-05-21) · approx. 6:31 PM UTC+10 local
On May 21, 2022 at 08:31 UTC, a magnitude 4.6 shallow crustal earthquake struck in the Guam region, at a depth of 33.7 km and coordinates 12.8654°, 144.6535°. This earthquake was detected by 16 seismic stations with good location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
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
144.6535°E
Technical Information
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Common Questions
How strong was the magnitude 4.6 earthquake in the Guam region?
The magnitude 4.6 earthquake that struck in the Guam region on May 21, 2022 at 08:31 UTC had a depth of 33.7 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 12.8654°, 144.6535°, which is in the Guam region.
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: us7000hcrc). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, May 21, 2022). M4.6 Earthquake in the Guam region — May 21, 2022. Retrieved August 2, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000hcrc/