M4.8 Earthquake 29 km ESE of Inarajan Village, Guam — September 26, 2023
2023-09-26 08:04:07 UTC (2023-09-26) · approx. 6:04 PM UTC+10 local
Felt by 34 people across nearby locations.
On September 26, 2023 at 08:04 UTC, a magnitude 4.8 shallow crustal earthquake struck 29 km ESE of Inarajan Village, Guam, at a depth of 49.1 km and coordinates 13.2103°, 145.0112°. This earthquake was detected by 75 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 367, 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 34 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
145.0112°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.8 earthquake near Inarajan Village, Guam?
The magnitude 4.8 earthquake that struck 29 km ESE of Inarajan Village, Guam on September 26, 2023 at 08:04 UTC had a depth of 49.1 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 13.2103°, 145.0112°, which is 29 km ESE of Inarajan 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: us7000ky57). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 26, 2023). M4.8 Earthquake 29 km ESE of Inarajan Village, Guam — September 26, 2023. Retrieved December 9, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000ky57/