4.3

M4.3 Earthquake 140 km SW of Palimbang, PhilippinesSeptember 2, 2023

2023-09-02 18:58:53 UTC (2023-09-02) · approx. 2:58 AM UTC+8 local

MagnitudeM4.3(mb)
Time18:58 UTC2:58 AM UTC+8
Depth572.3 kmdeep-focus
Coordinates5.201°, 123.420°
Felt byNo felt reports
Status✓ Reviewed by USGS

On September 2, 2023 at 18:58 UTC, a magnitude 4.3 deep-focus earthquake struck 140 km SW of Palimbang, Philippines, at a depth of 572.3 km and coordinates 5.2007°, 123.4199°.

Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 5.20°, 123.42°

Earthquake Details

Magnitude
4.3 mb
Depth
572.3 km
deep-focus
Location
5.2007°N
123.4199°E

Technical Information

Event ID
us7000ktyr
Event Type
earthquake
Status
✓ Reviewed
Significance
284
Stations Used
66
Azimuthal Gap
63.0°
Min Station Distance
2.838°
RMS Residual
0.59 sec
Last Updated
2023-11-04 21:36:33 UTC

Common Questions

How strong was the magnitude 4.3 earthquake near Palimbang, Philippines?

The magnitude 4.3 earthquake that struck 140 km SW of Palimbang, Philippines on September 2, 2023 at 18:58 UTC had a depth of 572.3 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 4.3 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.3 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000ktyr). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, September 2, 2023). M4.3 Earthquake 140 km SW of Palimbang, PhilippinesSeptember 2, 2023. Retrieved November 4, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000ktyr/