3.1

M3.1 Earthquake 6 km WSW of Westbrook, TexasNovember 20, 2025

2025-11-20 20:41:28 UTC (2025-11-20) · approx. 1:41 PM UTC-7 local

MagnitudeM3.1(ml)
Time20:41 UTC1:41 PM UTC-7
Depth7.1 kmshallow crustal
Coordinates32.338°, -101.076°
Felt byNo felt reports
Status✓ Reviewed by USGS

On November 20, 2025 at 20:41 UTC, a magnitude 3.1 shallow crustal earthquake struck 6 km WSW of Westbrook, Texas, at a depth of 7.1 km and coordinates 32.3380°, -101.0760°.

Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 674 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 32.34°, -101.08°

Earthquake Details

Magnitude
3.1 ml
Depth
7.1 km
shallow crustal
Location
32.3380°N
-101.0760°E

Technical Information

Event ID
tx2025wwmsca
Event Type
earthquake
Status
✓ Reviewed
Significance
148
Stations Used
44
Azimuthal Gap
43.0°
Min Station Distance
0.200°
RMS Residual
0.10 sec
Last Updated
2026-02-20 16:07:32 UTC

Common Questions

How strong was the magnitude 3.1 earthquake near Westbrook, Texas?

The magnitude 3.1 earthquake that struck 6 km WSW of Westbrook, Texas on November 20, 2025 at 20:41 UTC had a depth of 7.1 km. For context, this was a minor earthquake typically detected only by instruments.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.1 earthquakes can continue for several days and gradually diminish over time.

What should I do after an earthquake?

If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.

Authoritative source: USGS event page (event ID: tx2025wwmsca). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, November 20, 2025). M3.1 Earthquake 6 km WSW of Westbrook, TexasNovember 20, 2025. Retrieved May 25, 2026 from https://www.earthquaketracker.org/earthquakes/event/tx2025wwmsca/