EARTHQUAKES · SAN AUGUSTINE AREA · TX2023ZOCK
Magnitude 2.3 6 km SW of Huxley, Texas
Saturday, December 30, 2023, 5:30:44 AM Central · 2023-12-30 11:30:44 UTC
A magnitude 2.3 earthquake 6 km SW of Huxley, Texas on December 30, 2023 at 5:30 AM Central, 14.8 km deep, in the San Augustine County area.
It is one of 5 M2+ events located within 10 km of this spot, none in the thirty days before it; the largest nearby was M3.2.
2 active injection or disposal wells sit within 10 km, the nearest 9 km away and operated by Silver Hill Energy Operating LLC; together they hold 33,000 barrels a day of permitted capacity.
- M2.3
- ML, reviewed
- 14.8
- km deep · 48,622 ft
- 0
- M2+ within 10 km, prior 30 days
- 5
- M2+ within 10 km, all time
- 2
- active injection wells within 10 km
- 114
- permitted wells within 10 km
Location
- Epicenter
- 31.7240, -93.9350
- County area
- San Augustine 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 |
|---|---|---|---|
| Dec 30, 2023, 5:43 AM | 2.4 | 5.9 km | 4.2 km |
| Dec 31, 2023, 5:10 AM | 2.4 | 7.1 km | 4.1 km |
| Aug 21, 2025, 4:14 PM | 3.0 | 5.1 km | 7.5 km |
| Aug 21, 2025, 9:02 PM | 3.2 | 2.9 km | 8.7 km |
Largest nearby on record: M3.2 on Aug 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.
| Well | Operator | UIC no. | Distance | Permitted, bbl/d | Injection zone, ft |
|---|---|---|---|---|---|
| USA Ellington #3 | Silver Hill Energy Operating LLC | 000096063 | 9 km | 8,000 | 5,730–6,010 |
| Ventana SWD #3 | Ventana Midstream LLC | 000126916 | 9.4 km | 25,000 | 6,000–6,350 |
Disposal in San Augustine County → · How disposal permits and volumes work →
About this data
Event tx2023zock 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/tx2023zock, documented in the API reference.