M4.8 Earthquake 60 km NE of Norsup, Vanuatu — September 13, 2021
2021-09-13 17:13:34 UTC (2021-09-13) · approx. 4:13 AM UTC+11 local
On September 13, 2021 at 17:13 UTC, a magnitude 4.8 intermediate depth earthquake struck 60 km NE of Norsup, Vanuatu, at a depth of 141.5 km and coordinates -15.7238°, 167.8414°.
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.
The epicenter is located in Vanuatu, a region characterized by the New Hebrides subduction zone, where the Australian Plate subducts eastward at approximately 90 mm per year. View all earthquakes in Vanuatu.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
167.8414°E
Technical Information
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Common Questions
How strong was the magnitude 4.8 earthquake near Norsup, Vanuatu?
The magnitude 4.8 earthquake that struck 60 km NE of Norsup, Vanuatu on September 13, 2021 at 17:13 UTC had a depth of 141.5 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -15.7238°, 167.8414°, which is 60 km NE of Norsup, Vanuatu. View all earthquakes in Vanuatu.
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.
Has Vanuatu had earthquakes this big before?
The largest recorded earthquake in Vanuatu was the M7.9 Vanuatu earthquake of October 7, 2009. Today's magnitude 4.8 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us7000fau2). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, September 13, 2021). M4.8 Earthquake 60 km NE of Norsup, Vanuatu — September 13, 2021. Retrieved November 23, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000fau2/