M4.5 Earthquake 42 km ENE of Yigo Village, Guam — March 29, 2026
2026-03-29 15:06:23 UTC (2026-03-29) · approx. 1:06 AM UTC+10 local
Felt by 2 people across nearby locations. Aftershock of the M5.0 mainshock.
On March 29, 2026 at 15:06 UTC, a magnitude 4.5 shallow crustal earthquake struck 42 km ENE of Yigo Village, Guam, at a depth of 66.6 km and coordinates 13.7273°, 145.2259°. This earthquake was detected by 35 seismic stations with good location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.0 mainshock that occurred 19 days ago 44 km N of Yigo Village, Guam. Since the mainshock, the USGS has recorded 0 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
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
145.2259°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.5 earthquake near Yigo Village, Guam?
The magnitude 4.5 earthquake that struck 42 km ENE of Yigo Village, Guam on March 29, 2026 at 15:06 UTC had a depth of 66.6 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 13.7273°, 145.2259°, which is 42 km ENE of Yigo Village, Guam.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M5.0 one earlier?
No. This magnitude 4.5 earthquake is an aftershock of the larger magnitude 5.0 mainshock that occurred earlier 44 km N of Yigo Village, Guam. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us7000s8jx). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, March 29, 2026). M4.5 Earthquake 42 km ENE of Yigo Village, Guam — March 29, 2026. Retrieved May 13, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000s8jx/