Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Cotulla, TX
USGS: 8 km SE of Fowlerton, Texas
- When
- 3:56 am CST on 30 January 2026 ()
- Where
- 48 km (30 mi) E of Cotulla, TX · earthquakes near Cotulla
- Magnitude
- M 1.7 (ml)
- Depth
- 6.3 km below the surface
- Felt
- no reports yet
- Nearest
- McMullen County, 17 km E
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 245 days ago
A magnitude 1.7 earthquake was recorded 48 km (30 mi) E of Cotulla, TX, at 3:56 am CST on 30 January 2026 (09:56 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
How big was it?
This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 89× the energy of this one
- This earthquake M 1.7 about 11 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 28.4070, -98.7500. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| McMullen County, TX | 17 km (11 mi) | E | earthquakes near McMullen County |
| La Salle County, TX | 34 km (21 mi) | W | earthquakes near La Salle County |
| Atascosa County, TX | 58 km (36 mi) | NNE | earthquakes near Atascosa County |
| Live Oak County, TX | 61 km (38 mi) | E | earthquakes near Live Oak County |
| Frio County, TX | 62 km (39 mi) | NW | earthquakes near Frio County |
| Duval County, TX | 84 km (52 mi) | SSE | earthquakes near Duval County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
21 earthquakes have been recorded within 50 km since this one.
- 1.7 18 km WNW of Three Rivers, Texas
- 1.5 19 km WNW of Three Rivers, Texas
- 3.0 23 km E of Dilley, Texas
- 1.6 17 km NW of Three Rivers, Texas
- 1.5 20 km NW of Three Rivers, Texas
- 2.1 20 km WNW of Three Rivers, Texas
- 1.6 9 km NW of Tilden, Texas
- 1.5 18 km NW of Three Rivers, Texas
- 1.9 8 km SE of Fowlerton, Texas
- 1.5 16 km NW of Three Rivers, Texas
- 2.1 9 km SSE of Fowlerton, Texas
- 2.1 8 km SSE of Fowlerton, Texas
- 1.8 7 km SE of Fowlerton, Texas
- 1.9 southern Texas
- 1.9 8 km ESE of Fowlerton, Texas
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.