EARTHQUAKES · FRIO AREA · TX2019HCNT
Magnitude 2.1 17 km E of Dilley, Texas
Thursday, April 11, 2019, 6:58:24 PM Central · 2019-04-11 23:58:24 UTC
A magnitude 2.1 earthquake 17 km E of Dilley, Texas on April 11, 2019 at 6:58 PM Central, 7.2 km deep, in the Frio County area.
It is one of 36 M2+ events located within 10 km of this spot, 2 of them in the thirty days before it; the largest nearby was M3.5.
3 active injection or disposal wells sit within 10 km, the nearest 0.7 km away and operated by Sydri Operating, LLC; together they hold 32,000 barrels a day of permitted capacity.
- M2.1
- ML, reviewed
- 7.2
- km deep · 23,693 ft
- 2
- M2+ within 10 km, prior 30 days
- 36
- M2+ within 10 km, all time
- 3
- active injection wells within 10 km
- 275
- permitted wells within 10 km
Location
- Epicenter
- 28.6380, -98.9940
- 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 |
|---|---|---|---|
| Mar 19, 2019, 5:31 PM | 2.1 | 3.8 km | 1.2 km |
| Mar 13, 2019, 1:56 PM | 2.0 | 7.3 km | 2.0 km |
| May 14, 2019, 8:25 AM | 2.4 | 4.2 km | 4.8 km |
| Feb 15, 2019, 9:47 PM | 2.1 | 9.9 km | 8.0 km |
| Feb 5, 2019, 4:12 PM | 2.3 | 7.7 km | 2.4 km |
| Apr 11, 2021, 6:32 AM | 2.4 | 10 km | 5.4 km |
| Apr 12, 2021, 3:51 AM | 2.1 | 9.5 km | 5.7 km |
| Dec 5, 2021, 7:51 AM | 2.0 | 9.4 km | 6.1 km |
| Mar 12, 2022, 7:38 PM | 2.5 | 8.5 km | 5.6 km |
| Mar 13, 2022, 9:39 PM | 2.4 | 7.6 km | 5.4 km |
| Mar 14, 2022, 4:40 AM | 2.4 | 6.7 km | 5.8 km |
| Mar 15, 2022, 7:48 AM | 2.4 | 6.9 km | 7.0 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 | 0.7 km | 25,000 | 8,218–8,294 |
| Lonestar Operating SWD #1 | FW Eagle Ford I, LLC | 000114616 | 2.8 km | 4,000 | 8,341–8,949 |
| Shiner Ranch #7 | Trinity Operating (Usg), LLC | 000078949 | 4 km | 3,000 | 5,530–5,800 |
Disposal in Frio County → · How disposal permits and volumes work →
About this data
Event tx2019hcnt 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/tx2019hcnt, documented in the API reference.