EARTHQUAKES · MCMULLEN AREA · TX2023FNDO
Magnitude 2.3 25 km NNW of Three Rivers, Texas
Monday, March 20, 2023, 3:14:55 AM Central · 2023-03-20 08:14:55 UTC
A magnitude 2.3 earthquake 25 km NNW of Three Rivers, Texas on March 20, 2023 at 3:14 AM Central, 6.3 km deep, in the McMullen County area.
It is one of 41 M2+ events located within 10 km of this spot, none in the thirty days before it; the largest nearby was M2.8.
1 active injection or disposal wells sit within 10 km, the nearest 2.2 km away and operated by Marathon Oil EF LLC.
- M2.3
- ML, reviewed
- 6.3
- km deep · 20,510 ft
- 0
- M2+ within 10 km, prior 30 days
- 41
- M2+ within 10 km, all time
- 1
- active injection wells within 10 km
- 481
- permitted wells within 10 km
Location
- Epicenter
- 28.6770, -98.2670
- County area
- McMullen 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 |
|---|---|---|---|
| Mar 21, 2023, 3:04 AM | 2.2 | 2.9 km | 8.8 km |
| Mar 21, 2023, 8:04 AM | 2.4 | 2.1 km | 3.8 km |
| Mar 21, 2023, 6:40 PM | 2.1 | 2.3 km | 5.7 km |
| Mar 22, 2023, 8:40 AM | 2.3 | 2.3 km | 8.4 km |
| Mar 22, 2023, 8:48 PM | 2.0 | 2.2 km | 5.5 km |
| Mar 25, 2023, 6:53 AM | 2.0 | 2.7 km | 8.9 km |
| Mar 25, 2023, 8:45 AM | 2.0 | 3.7 km | 9.5 km |
| Mar 25, 2023, 10:05 AM | 2.8 | 2.5 km | 5.2 km |
| May 23, 2023, 2:19 PM | 2.6 | 1.7 km | 5.0 km |
| May 23, 2023, 2:23 PM | 2.0 | 2 km | 7.4 km |
| May 24, 2023, 1:09 AM | 2.0 | 2.4 km | 8.9 km |
| May 27, 2023, 2:14 AM | 2.1 | 2.5 km | 9.2 km |
Largest nearby on record: M2.8 on Mar 25, 2023.
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 |
|---|---|---|---|---|---|
| Guajillo East #71H | Marathon Oil EF LLC | 000124725 | 2.2 km | — | 10,427–11,129 |
Disposal in McMullen County → · How disposal permits and volumes work →
About this data
Event tx2023fndo 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/tx2023fndo, documented in the API reference.