EARTHQUAKES · FRIO AREA · TX2021HBPD
Magnitude 2.4 24 km NNW of Fowlerton, Texas
Sunday, April 11, 2021, 6:32:01 AM Central · 2021-04-11 11:32:01 UTC
A magnitude 2.4 earthquake 24 km NNW of Fowlerton, Texas on April 11, 2021 at 6:32 AM Central, 5.4 km deep, in the Frio County area.
It is one of 50 M2+ events located within 10 km of this spot, none in the thirty days before it; the largest nearby was M3.5.
2 active injection or disposal wells sit within 10 km, the nearest 9.4 km away and operated by Sydri Operating, LLC; together they hold 50,000 barrels a day of permitted capacity.
- M2.4
- ML, reviewed
- 5.4
- km deep · 17,818 ft
- 0
- M2+ within 10 km, prior 30 days
- 50
- M2+ within 10 km, all time
- 2
- active injection wells within 10 km
- 273
- permitted wells within 10 km
Location
- Epicenter
- 28.6690, -98.8980
- County area
- Frio 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 |
|---|---|---|---|
| Apr 12, 2021, 3:51 AM | 2.1 | 1.8 km | 5.7 km |
| Dec 5, 2021, 7:51 AM | 2.0 | 0.7 km | 6.1 km |
| Mar 12, 2022, 7:38 PM | 2.5 | 3.9 km | 5.6 km |
| Mar 13, 2022, 9:39 PM | 2.4 | 4.4 km | 5.4 km |
| Mar 14, 2022, 4:40 AM | 2.4 | 3.7 km | 5.8 km |
| Mar 15, 2022, 7:48 AM | 2.4 | 4.3 km | 7.0 km |
| Mar 15, 2022, 10:48 AM | 2.5 | 6.8 km | 5.6 km |
| Mar 15, 2022, 11:15 AM | 2.3 | 8 km | 5.0 km |
| Mar 16, 2022, 5:56 PM | 2.2 | 3.8 km | 6.8 km |
| Mar 18, 2022, 9:15 PM | 2.2 | 3.4 km | 7.7 km |
| Mar 27, 2022, 4:50 AM | 2.1 | 2.9 km | 5.2 km |
| Jul 17, 2022, 9:24 PM | 2.0 | 5.1 km | 5.7 km |
Largest nearby on record: M3.5 on Nov 15, 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 |
|---|---|---|---|---|---|
| Wilson Ranch #11 | Sydri Operating, LLC | 000108792 | 9.4 km | 25,000 | 8,218–8,294 |
| R R Prince Ranch SWD, Ltd #1 | Evx Operating LLC | 000105164 | 9.6 km | 25,000 | 8,600–10,500 |
Disposal in Frio County → · How disposal permits and volumes work →
About this data
Event tx2021hbpd 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/tx2021hbpd, documented in the API reference.