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EARTHQUAKES · MITCHELL AREA · TX2025WWMSCA

Magnitude 3.1 6 km WSW of Westbrook, Texas

Thursday, November 20, 2025, 2:41:28 PM Central · 2025-11-20 20:41:28 UTC

A magnitude 3.1 earthquake 6 km WSW of Westbrook, Texas on November 20, 2025 at 2:41 PM Central, 7.1 km deep, in the Mitchell County area.

It is one of 43 M2+ events located within 10 km of this spot, 3 of them in the thirty days before it; the largest nearby was M4.3.

15 active injection or disposal wells sit within 10 km, the nearest 0.2 km away and operated by Grayrock Energy II, LLC; together they hold 9,700 barrels a day of permitted capacity.

7 of the nearby wells report daily to TexNet; they injected 2,475 barrels a day in August 2026.

M3.1
ML, reviewed
7.1
km deep · 23,230 ft
3
M2+ within 10 km, prior 30 days
43
M2+ within 10 km, all time
15
active injection wells within 10 km
71
permitted wells within 10 km

Location

Epicenter
32.3380, -101.0760
County area
Mitchell County
On a map
Google Maps ↗
Catalog
USGS event page ↗ · TexNet catalog ↗

Around it in time and space

M2+ events within 10 km, nearest in time first.

WhenMagDistanceDepth
Nov 20, 2025, 4:53 PM2.80.1 km6.9 km
Nov 16, 2025, 8:01 AM2.50.4 km8.0 km
Oct 30, 2025, 9:00 AM2.21.4 km6.1 km
Oct 22, 2025, 2:30 PM2.70.5 km7.7 km
Oct 20, 2025, 7:27 AM2.50.3 km8.7 km
Oct 19, 2025, 5:03 PM2.50.3 km8.5 km
Oct 19, 2025, 3:40 PM3.20.5 km6.6 km
Oct 12, 2025, 6:00 PM2.91.4 km7.9 km
Oct 12, 2025, 1:08 AM4.30.6 km5.3 km
Dec 31, 2025, 3:42 AM2.40.8 km8.7 km
Feb 5, 2026, 12:11 AM2.56.4 km5.6 km
May 6, 2026, 4:48 PM2.33.8 km7.9 km

Largest nearby on record: M4.3 on Oct 12, 2025.

Injection wells within 10 km

RRC UIC MASTER · ACTIVE PERMITS

Proximity is not attribution. The wells are listed because the question is always asked; whether any of them is connected to this event is for the RRC's seismic response review, not this page. 7 of these report daily to TexNet: 2.48K bbl/d in Aug 2026.

WellOperatorUIC no.DistancePermitted, bbl/dInjection zone, ft
Westbrook Southwest Unit #213WGrayrock Energy II, LLC0000220380.2 km7002,300–3,300
Westbrook Southwest Unit #211WGrayrock Energy II, LLC0000220360.4 km7002,300–3,300
Westbrook Southwest Unit #202AWGrayrock Energy II, LLC0000220310.7 km7002,300–3,300
Westbrook Southwest Unit #204WGrayrock Energy II, LLC0000220340.8 km7002,300–3,300
Westbrook Southwest Unit #173Grayrock Energy II, LLC0000463290.8 km7002,300–3,300
Westbrook Southwest Unit #1520WGrayrock Energy II, LLC0000988781 km5002,300–3,300
Westbrook Southwest Unit #2014Grayrock Energy II, LLC0000975441 km7002,300–3,300
Westbrook Southwest Unit #205WGrayrock Energy II, LLC0000220351 km7002,300–3,300
Westbrook Southwest Unit #1032WGrayrock Energy II, LLC0000905831.1 km7002,300–3,300
Westbrook Southwest Unit #1508Grayrock Energy II, LLC0000987921.1 km5002,300–3,300
Westbrook Southwest Unit #1020WGrayrock Energy II, LLC0000825901.2 km7002,300–3,300
Westbrook Southwest Unit #194WGrayrock Energy II, LLC0000220271.2 km7002,300–3,300
Westbrook Southwest Unit #1006WGrayrock Energy II, LLC0000427301.3 km7002,300–3,300
Westbrook Southeast Unit #1056WBce-Mach III LLC0000920791.4 km5002,850–3,250
Westbrook Southeast Unit #1053WBce-Mach III LLC0000904131.4 km5002,850–3,200

Disposal in Mitchell County → · How disposal permits and volumes work →

About this data

Event tx2025wwmsca from the USGS earthquake catalog, located by TexNet (UT Bureau of Economic Geology) and refreshed daily. Nearby wells from the RRC UIC well master and permit coordinates; daily volumes from the TexNet injection reporting tool.

Developers: this page as JSON is GET /v1/data/earthquakes/tx/events/tx2025wwmsca, documented in the API reference.