4.1

M4.1 Earthquake 13 km N of Gadung, PhilippinesNovember 30, 2023

2023-11-30 22:18:05 UTC (2023-11-30) · approx. 6:18 AM UTC+8 local

MagnitudeM4.1(mb)
Time22:18 UTC6:18 AM UTC+8
Depth547.5 kmdeep-focus
Coordinates6.923°, 123.996°
Felt byNo felt reports
Status✓ Reviewed by USGS

On November 30, 2023 at 22:18 UTC, a magnitude 4.1 deep-focus earthquake struck 13 km N of Gadung, Philippines, at a depth of 547.5 km and coordinates 6.9228°, 123.9963°.

Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 6.92°, 124.00°

Earthquake Details

Magnitude
4.1 mb
Depth
547.5 km
deep-focus
Location
6.9228°N
123.9963°E

Technical Information

Event ID
us7000lggq
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Stations Used
26
Azimuthal Gap
122.0°
Min Station Distance
6.603°
RMS Residual
0.54 sec
Last Updated
2024-02-06 21:53:59 UTC

Common Questions

How strong was the magnitude 4.1 earthquake near Gadung, Philippines?

The magnitude 4.1 earthquake that struck 13 km N of Gadung, Philippines on November 30, 2023 at 22:18 UTC had a depth of 547.5 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 4.1 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.1 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000lggq). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, November 30, 2023). M4.1 Earthquake 13 km N of Gadung, PhilippinesNovember 30, 2023. Retrieved February 6, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lggq/