M4.9 Earthquake 208 km WNW of Port-Olry, Vanuatu — October 21, 2026
2026-10-21 15:22:33 UTC (2 hours ago) · approx. 2:22 AM UTC+11 local
On October 21, 2026 at 15:22 UTC, a magnitude 4.9 shallow crustal earthquake struck 208 km WNW of Port-Olry, Vanuatu, at a depth of 10.0 km and coordinates -14.1338°, 165.3793°. This earthquake was detected by 49 seismic stations with good location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 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
165.3793°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Port-Olry, Vanuatu?
The magnitude 4.9 earthquake that struck 208 km WNW of Port-Olry, Vanuatu on October 21, 2026 at 15:22 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 -14.1338°, 165.3793°, which is 208 km WNW of Port-Olry, Vanuatu. View all earthquakes in Vanuatu.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 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 4.9 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000u3uk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, October 21, 2026). M4.9 Earthquake 208 km WNW of Port-Olry, Vanuatu — October 21, 2026. Retrieved October 21, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000u3uk/