M4.5 Earthquake 45 km NNW of Asan-Maina Village, Guam — October 12, 2023
2023-10-12 23:54:40 UTC (2023-10-12) · approx. 9:54 AM UTC+10 local
On October 12, 2023 at 23:54 UTC, a magnitude 4.5 intermediate depth earthquake struck 45 km NNW of Asan-Maina Village, Guam, at a depth of 151.2 km and coordinates 13.8476°, 144.5536°. This earthquake was detected by 12 seismic stations with excellent 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.
Earthquake Details
144.5536°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.5 earthquake near Asan-Maina Village, Guam?
The magnitude 4.5 earthquake that struck 45 km NNW of Asan-Maina Village, Guam on October 12, 2023 at 23:54 UTC had a depth of 151.2 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 13.8476°, 144.5536°, which is 45 km NNW of Asan-Maina 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.
Actions
Authoritative source: USGS event page (event ID: us6000lge0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 12, 2023). M4.5 Earthquake 45 km NNW of Asan-Maina Village, Guam — October 12, 2023. Retrieved December 16, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000lge0/