M4.8 Earthquake 82 km WSW of Merizo Village, Guam — March 27, 2023
2023-03-27 12:11:14 UTC (2023-03-27) · approx. 10:11 PM UTC+10 local
Felt by 2 people across nearby locations.
On March 27, 2023 at 12:11 UTC, a magnitude 4.8 intermediate depth earthquake struck 82 km WSW of Merizo Village, Guam, at a depth of 136.9 km and coordinates 13.0978°, 143.9379°. This earthquake was detected by 76 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 355, placing it among routine seismic activity.
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.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 2 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
143.9379°E
Technical Information
Common Questions
How strong was the magnitude 4.8 earthquake near Merizo Village, Guam?
The magnitude 4.8 earthquake that struck 82 km WSW of Merizo Village, Guam on March 27, 2023 at 12:11 UTC had a depth of 136.9 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 13.0978°, 143.9379°, which is 82 km WSW 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: us7000jmzw). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, March 27, 2023). M4.8 Earthquake 82 km WSW of Merizo Village, Guam — March 27, 2023. Retrieved June 3, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000jmzw/