EARTHQUAKES · STERLING AREA · TX2025THLUUU
Magnitude 2.4 23 km S of Westbrook, Texas
Tuesday, September 30, 2025, 11:18:14 PM Central · 2025-10-01 04:18:14 UTC
A magnitude 2.4 earthquake 23 km S of Westbrook, Texas on September 30, 2025 at 11:18 PM Central, 7.2 km deep, in the Sterling County area.
It is one of 154 M2+ events located within 10 km of this spot, 4 of them in the thirty days before it; the largest nearby was M3.4.
4 active injection or disposal wells sit within 10 km, the nearest 2.2 km away and operated by Reservoir Fluid Solutions LLC; together they hold 41,600 barrels a day of permitted capacity.
1 of the nearby wells report daily to TexNet; they injected 138 barrels a day in August 2026.
- M2.4
- ML, reviewed
- 7.2
- km deep · 23,630 ft
- 4
- M2+ within 10 km, prior 30 days
- 154
- M2+ within 10 km, all time
- 4
- active injection wells within 10 km
- 52
- permitted wells within 10 km
Location
- Epicenter
- 32.1490, -101.0540
- 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 28, 2025, 9:58 PM | 2.4 | 5.6 km | 7.3 km |
| Sep 28, 2025, 10:15 AM | 2.3 | 1.9 km | 8.4 km |
| Sep 9, 2025, 9:53 AM | 2.1 | 2.5 km | 6.6 km |
| Sep 5, 2025, 11:16 PM | 3.4 | 3.9 km | 7.6 km |
| Aug 30, 2025, 10:17 PM | 2.2 | 3 km | 7.8 km |
| Nov 2, 2025, 8:55 PM | 2.1 | 3.4 km | 5.7 km |
| Aug 27, 2025, 5:39 PM | 2.0 | 0.4 km | 7.4 km |
| Aug 26, 2025, 1:41 AM | 2.0 | 2.3 km | 8.0 km |
| Nov 17, 2025, 3:22 AM | 2.1 | 3.5 km | 8.4 km |
| Nov 18, 2025, 9:13 AM | 2.0 | 2.7 km | 8.8 km |
| Nov 18, 2025, 11:36 AM | 2.4 | 2.5 km | 8.7 km |
| Aug 5, 2025, 8:48 AM | 2.8 | 0.4 km | 5.9 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 |
|---|---|---|---|---|---|
| Hughes SWD #1 | Reservoir Fluid Solutions LLC | 000106820 | 2.2 km | 20,000 | 2,750–4,300 |
| Port O'Connor '34' #1 | Saguaro Petroleum, LLC | 000127116 | 3.4 km | 800 | 7,925–7,980 |
| Port Lavaca '39-34' #13W | Saguaro Petroleum, LLC | 000127198 | 4.8 km | 800 | 7,800–8,100 |
| Spade Ranch #271 | Crownquest Operating, LLC | 000117681 | 5.4 km | 20,000 | 7,767–8,560 |
Disposal in Sterling County → · How disposal permits and volumes work →
About this data
Event tx2025thluuu 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/tx2025thluuu, documented in the API reference.