4.0

M4.0 Earthquake south of the Fiji IslandsMay 26, 2022

2022-05-26 20:39:32 UTC (2022-05-26) · approx. 8:39 AM UTC+12 local

MagnitudeM4.0(mb)
Time20:39 UTC8:39 AM UTC+12
Depth509.6 kmdeep-focus
Coordinates-25.055°, 179.823°
Felt byNo felt reports
Status✓ Reviewed by USGS

On May 26, 2022 at 20:39 UTC, a magnitude 4.0 deep-focus earthquake struck south of the Fiji Islands, at a depth of 509.6 km and coordinates -25.0545°, 179.8230°.

Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -25.05°, 179.82°

Earthquake Details

Magnitude
4.0 mb
Depth
509.6 km
deep-focus
Location
-25.0545°N
179.8230°E

Technical Information

Event ID
us7000hduz
Event Type
earthquake
Status
✓ Reviewed
Significance
246
Stations Used
19
Azimuthal Gap
177.0°
Min Station Distance
16.866°
RMS Residual
0.75 sec
Last Updated
2022-08-02 19:51:04 UTC

Common Questions

How strong was the magnitude 4.0 earthquake south of the Fiji Islands?

The magnitude 4.0 earthquake that struck south of the Fiji Islands on May 26, 2022 at 20:39 UTC had a depth of 509.6 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 4.0 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.0 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000hduz). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, May 26, 2022). M4.0 Earthquake south of the Fiji IslandsMay 26, 2022. Retrieved August 2, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000hduz/