M4.7 Earthquake near South Pacific Ocean — September 18, 2026
2026-09-18 23:51:06 UTC (2026-09-18) · approx. 2:51 PM UTC-9 local
On September 18, 2026 at 23:51 UTC, a magnitude 4.7 shallow crustal earthquake struck near South Pacific Ocean, at a depth of 10.0 km and coordinates -7.4544°, -132.1293°. This earthquake was detected by 78 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-132.1293°E
Technical Information
Common Questions
How strong was the magnitude 4.7 earthquake near South Pacific Ocean?
The magnitude 4.7 earthquake that struck near South Pacific Ocean on September 18, 2026 at 23:51 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -7.4544°, -132.1293°, which is near South Pacific Ocean.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000tigp). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 18, 2026). M4.7 Earthquake near South Pacific Ocean — September 18, 2026. Retrieved October 6, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tigp/