M5.2 Earthquake 44 km ENE of Luganville, Vanuatu — February 14, 2023
2023-02-14 02:03:16 UTC (2023-02-14) · approx. 1:03 PM UTC+11 local
Felt by 1 person across nearby locations. Aftershock of the M6.2 mainshock.
On February 14, 2023 at 02:03 UTC, a magnitude 5.2 intermediate depth earthquake struck 44 km ENE of Luganville, Vanuatu, at a depth of 119.6 km and coordinates -15.3552°, 167.5410°. The earthquake was reported felt by 1 personacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 3.8 (light). The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 130 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 417, placing it among routine seismic activity. The nearest populated place is Luganville (population 13,397).
Physical scale: An earthquake of magnitude 5.2 releases seismic energy equivalent to roughly 951 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.3 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 6.2 mainshock that occurred 16 days 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 weeks to months 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
Nearest Populated Places
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
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
Population exposure (USGS PAGER)
Estimated population that experienced each level of shaking. Based on the USGS PAGER rapid impact assessment, which combines ShakeMap output with global population grids.
| Shaking intensity (MMI) | Description | Population exposed |
|---|---|---|
| MMI 3 | weak | 76,673 |
| MMI 4 | light | 102,338 |
Earthquake Details
167.5410°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.2 earthquake near Luganville, Vanuatu?
The magnitude 5.2 earthquake that struck 44 km ENE of Luganville, Vanuatu on February 14, 2023 at 02:03 UTC had a depth of 119.6 km. It was felt by 1 person with maximum shaking intensity of MMI 3.8 (light). For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -15.3552°, 167.5410°, which is 44 km ENE of Luganville, Vanuatu. The nearest populated place is Luganville (population 13,397). View all earthquakes in Vanuatu.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.2 earthquakes can continue for days to weeks and gradually diminish over time.
Is this the same earthquake as the M6.2 one earlier?
No. This magnitude 5.2 earthquake is an aftershock of the larger magnitude 6.2 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 5.2 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000jnpc). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, February 14, 2023). M5.2 Earthquake 44 km ENE of Luganville, Vanuatu — February 14, 2023. Retrieved April 22, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000jnpc/