4.2

M4.2 Earthquake 33 km ESE of Lamitan, PhilippinesAugust 20, 2025

2025-08-20 21:32:01 UTC (2025-08-20) · approx. 5:32 AM UTC+8 local

MagnitudeM4.2(mb)
Time21:32 UTC5:32 AM UTC+8
Depth152.4 kmintermediate depth
Coordinates5.998°, 125.987°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 20, 2025 at 21:32 UTC, a magnitude 4.2 intermediate depth earthquake struck 33 km ESE of Lamitan, Philippines, at a depth of 152.4 km and coordinates 5.9983°, 125.9874°.

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 6.00°, 125.99°

Earthquake Details

Magnitude
4.2 mb
Depth
152.4 km
intermediate depth
Location
5.9983°N
125.9874°E

Technical Information

Event ID
us7000qwc7
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Stations Used
23
Azimuthal Gap
183.0°
Min Station Distance
1.139°
RMS Residual
0.53 sec
Last Updated
2025-11-12 16:25:46 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Lamitan, Philippines?

The magnitude 4.2 earthquake that struck 33 km ESE of Lamitan, Philippines on August 20, 2025 at 21:32 UTC had a depth of 152.4 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: us7000qwc7). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, August 20, 2025). M4.2 Earthquake 33 km ESE of Lamitan, PhilippinesAugust 20, 2025. Retrieved November 12, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qwc7/