M4.8 Earthquake 39 km E of Port-Olry, Vanuatu — April 8, 2022
2022-04-08 19:40:51 UTC (2022-04-08) · approx. 6:40 AM UTC+11 local
Felt by 1 person across nearby locations. Aftershock of the M5.2 mainshock.
On April 8, 2022 at 19:40 UTC, a magnitude 4.8 intermediate depth earthquake struck 39 km E of Port-Olry, Vanuatu, at a depth of 110.0 km and coordinates -15.0049°, 167.4349°.
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.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.2 mainshock that occurred 7 hours ago 43 km ESE of Port-Olry, Vanuatu. Since the mainshock, the USGS has recorded 0 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
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
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 1 citizen response 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
167.4349°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.8 earthquake near Port-Olry, Vanuatu?
The magnitude 4.8 earthquake that struck 39 km E of Port-Olry, Vanuatu on April 8, 2022 at 19:40 UTC had a depth of 110.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -15.0049°, 167.4349°, which is 39 km E of Port-Olry, Vanuatu. View all earthquakes in Vanuatu.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M5.2 one earlier?
No. This magnitude 4.8 earthquake is an aftershock of the larger magnitude 5.2 mainshock that occurred earlier 43 km ESE of Port-Olry, Vanuatu. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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: us7000h0su). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, April 8, 2022). M4.8 Earthquake 39 km E of Port-Olry, Vanuatu — April 8, 2022. Retrieved August 6, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000h0su/