EARTHQUAKES · STERLING AREA · TX2025RTWWKK
Magnitude 2.1 24 km SSW of Westbrook, Texas
Tuesday, September 9, 2025, 9:53:01 AM Central · 2025-09-09 14:53:01 UTC
A magnitude 2.1 earthquake 24 km SSW of Westbrook, Texas on September 9, 2025 at 9:53 AM Central, 6.6 km deep, in the Sterling County area.
It is one of 151 M2+ events located within 10 km of this spot, 4 of them in the thirty days before it; the largest nearby was M3.4.
7 active injection or disposal wells sit within 10 km, the nearest 3.6 km away and operated by Saguaro Petroleum, LLC; together they hold 42,800 barrels a day of permitted capacity.
1 of the nearby wells report daily to TexNet; they injected 138 barrels a day in August 2026.
- M2.1
- ML, reviewed
- 6.6
- km deep · 21,548 ft
- 4
- M2+ within 10 km, prior 30 days
- 151
- M2+ within 10 km, all time
- 7
- active injection wells within 10 km
- 50
- permitted wells within 10 km
Location
- Epicenter
- 32.1430, -101.0800
- County area
- Sterling 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.
| When | Mag | Distance | Depth |
|---|---|---|---|
| Sep 5, 2025, 11:16 PM | 3.4 | 4 km | 7.6 km |
| Aug 30, 2025, 10:17 PM | 2.2 | 3.8 km | 7.8 km |
| Aug 27, 2025, 5:39 PM | 2.0 | 2.2 km | 7.4 km |
| Aug 26, 2025, 1:41 AM | 2.0 | 0.4 km | 8.0 km |
| Sep 28, 2025, 10:15 AM | 2.3 | 1.2 km | 8.4 km |
| Sep 28, 2025, 9:58 PM | 2.4 | 3.2 km | 7.3 km |
| Sep 30, 2025, 11:18 PM | 2.4 | 2.5 km | 7.2 km |
| Aug 5, 2025, 8:48 AM | 2.8 | 3 km | 5.9 km |
| Aug 4, 2025, 10:50 PM | 2.0 | 2.8 km | 8.7 km |
| Jul 30, 2025, 5:40 PM | 2.5 | 1 km | 8.4 km |
| Jul 30, 2025, 3:31 PM | 2.5 | 3.1 km | 6.1 km |
| Jul 30, 2025, 2:34 PM | 2.2 | 4 km | 7.9 km |
Largest nearby on record: M3.4 on Dec 22, 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. 1 of these report daily to TexNet: 138 bbl/d in Aug 2026.
| Well | Operator | UIC no. | Distance | Permitted, bbl/d | Injection zone, ft |
|---|---|---|---|---|---|
| Port O'Connor '34' #1 | Saguaro Petroleum, LLC | 000127116 | 3.6 km | 800 | 7,925–7,980 |
| Hughes SWD #1 | Reservoir Fluid Solutions LLC | 000106820 | 4.3 km | 20,000 | 2,750–4,300 |
| Port Lavaca '39-34' #13W | Saguaro Petroleum, LLC | 000127198 | 4.5 km | 800 | 7,800–8,100 |
| Spade Ranch #271 | Crownquest Operating, LLC | 000117681 | 7.6 km | 20,000 | 7,767–8,560 |
| Niemeyer #603 | Gallo Petroleum, LLC | 000084239 | 8.4 km | 700 | 1,156–1,168 |
| Rackley, C. B. #802 | Skeeter Oil L.L.C. | 000100009 | 8.6 km | 250 | 1,245–1,285 |
| Rackley, C. B. #803W | Skeeter Oil L.L.C. | 000100010 | 8.7 km | 250 | 1,245–1,285 |
Disposal in Sterling County → · How disposal permits and volumes work →
About this data
Event tx2025rtwwkk 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/tx2025rtwwkk, documented in the API reference.