4.2

M4.2 Earthquake near Celebes SeaMay 28, 2023

2023-05-28 21:12:56 UTC (2023-05-28) · approx. 5:12 AM UTC+8 local

MagnitudeM4.2(mb)
Time21:12 UTC5:12 AM UTC+8
Depth520.4 kmdeep-focus
Coordinates3.116°, 122.669°
Felt byNo felt reports
Status✓ Reviewed by USGS

On May 28, 2023 at 21:12 UTC, a magnitude 4.2 deep-focus earthquake struck near Celebes Sea, at a depth of 520.4 km and coordinates 3.1165°, 122.6688°.

Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 3.12°, 122.67°

Earthquake Details

Magnitude
4.2 mb
Depth
520.4 km
deep-focus
Location
3.1165°N
122.6688°E

Technical Information

Event ID
us7000k5tl
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Stations Used
28
Azimuthal Gap
94.0°
Min Station Distance
9.462°
RMS Residual
0.46 sec
Last Updated
2023-08-05 22:07:48 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Celebes Sea?

The magnitude 4.2 earthquake that struck near Celebes Sea on May 28, 2023 at 21:12 UTC had a depth of 520.4 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 4.2 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.2 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000k5tl). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, May 28, 2023). M4.2 Earthquake near Celebes SeaMay 28, 2023. Retrieved August 5, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000k5tl/