4.4

M4.4 Earthquake 235 km E of Levuka, FijiOctober 31, 2021

2021-10-31 23:47:49 UTC (2021-10-31) · approx. 11:47 AM UTC-12 local

MagnitudeM4.4(mb)
Time23:47 UTC11:47 AM UTC-12
Depth570.5 kmdeep-focus
Coordinates-17.942°, -178.463°
Felt byNo felt reports
Status✓ Reviewed by USGS

On October 31, 2021 at 23:47 UTC, a magnitude 4.4 deep-focus earthquake struck 235 km E of Levuka, Fiji, at a depth of 570.5 km and coordinates -17.9423°, -178.4634°.

Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -17.94°, -178.46°

Earthquake Details

Magnitude
4.4 mb
Depth
570.5 km
deep-focus
Location
-17.9423°N
-178.4634°E

Technical Information

Event ID
us7000fqcd
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Azimuthal Gap
121.0°
Min Station Distance
3.628°
RMS Residual
0.69 sec
Last Updated
2022-01-14 17:58:48 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near Levuka, Fiji?

The magnitude 4.4 earthquake that struck 235 km E of Levuka, Fiji on October 31, 2021 at 23:47 UTC had a depth of 570.5 km. For context, this was a light earthquake commonly felt near the epicenter.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.4 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.4 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000fqcd). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, October 31, 2021). M4.4 Earthquake 235 km E of Levuka, FijiOctober 31, 2021. Retrieved January 14, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000fqcd/