5.1

M5.1 Earthquake 62 km NE of Norsup, Vanuatu — December 15, 2020

2020-12-15 22:43:05 UTC (2020-12-15) · approx. 9:43 AM UTC+11 local

Felt by 1 person across nearby locations.

MagnitudeM5.1(mb)
Time22:43 UTC≈ 9:43 AM UTC+11
Depth120.0 kmintermediate depth
Coordinates-15.635°, 167.778°
Felt by1DYFI response
Status✓ Reviewed by USGS

On December 15, 2020 at 22:43 UTC, a magnitude 5.1 intermediate depth earthquake struck 62 km NE of Norsup, Vanuatu, at a depth of 120.0 km and coordinates -15.6354°, 167.7782°.

Physical scale: An earthquake of magnitude 5.1 releases seismic energy equivalent to roughly 674 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.0 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

Map showing earthquake epicenter at -15.64°, 167.78°

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.

USGS DYFI community-reported intensity map for the M5.1 earthquake near 62 km NE of Norsup, Vanuatu

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
5.1 mb
Depth
120.0 km
intermediate depth
Location
-15.6354°N
167.7782°E
Felt Reports
1
DYFI responses
Community Intensity
3.4
CDI from reports

Technical Information

Event ID
us7000crdn
Event Type
earthquake
Status
✓ Reviewed
Significance
400
Azimuthal Gap
83.0°
Min Station Distance
0.585°
RMS Residual
1.21 sec
Last Updated
2022-08-09 01:50:38 UTC

Common Questions

How strong was the magnitude 5.1 earthquake near Norsup, Vanuatu?

The magnitude 5.1 earthquake that struck 62 km NE of Norsup, Vanuatu on December 15, 2020 at 22:43 UTC had a depth of 120.0 km. For context, this was a moderate earthquake that could be widely felt.

Where did the earthquake occur?

The earthquake epicenter was located at -15.6354°, 167.7782°, which is 62 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 5.1 earthquakes can continue for days to weeks 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 5.1 event is significantly smaller than that historical record.

Authoritative source: USGS event page (event ID: us7000crdn). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, December 15, 2020). M5.1 Earthquake 62 km NE of Norsup, Vanuatu — December 15, 2020. Retrieved August 9, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000crdn/