QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

Earthquake near Eagle Pass, TX

USGS: 12 km NNE of El Indio, Texas

10:23 pm CDT, Sep 23, 2021 · · 8.4 km deep · released about 85 lb of TNT

Every earthquake near Eagle Pass Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Maverick County 13 kmDimmit County 55 kmZavala County 58 kmKinney County 82 kmUvalde County 95 kmFrio County 118 kmLa Salle County 120 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
10:23 pm CDT on 23 September 2021 ()
Where
23 km (15 mi) ESE of Eagle Pass, TX · earthquakes near Eagle Pass
Magnitude
M 2.3 (ml)
Depth
8.4 km below the surface
Felt
no reports yet
Nearest
Maverick County, 13 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 457 days ago

A magnitude 2.3 earthquake was recorded 23 km (15 mi) ESE of Eagle Pass, TX, at 10:23 pm CDT on 23 September 2021 (03:23 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Rosita North, Rosita South, Las Quintas Fronterizas, Las Quintas Fronterizas Colonia, Eidson Road, Siesta Acres.

How big was it?

This earthquake released about 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 28.6210, -100.2810. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Maverick County, TX 13 km (8 mi) NNW earthquakes near Maverick County
Dimmit County, TX 55 km (34 mi) ESE earthquakes near Dimmit County
Zavala County, TX 58 km (36 mi) ENE earthquakes near Zavala County
Kinney County, TX 82 km (51 mi) N earthquakes near Kinney County
Uvalde County, TX 95 km (59 mi) NNE earthquakes near Uvalde County
Frio County, TX 118 km (73 mi) ENE earthquakes near Frio County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

19 earthquakes have been recorded within 50 km since this one.

  1. 2.7 17 km NE of El Indio, Texas
  2. 2.2 21 km W of Carrizo Springs, Texas
  3. 2.0 13 km WSW of Asherton, Texas
  4. 2.0 17 km E of El Indio, Texas
  5. 3.6 18 km E of El Indio, Texas
  6. 2.3 5 km SW of Carrizo Hill, Texas
  7. 2.2 15 km ENE of El Indio, Texas
  8. 2.5 19 km E of El Indio, Texas
  9. 2.5 19 km E of El Indio, Texas
  10. 2.6 16 km ENE of El Indio, Texas
  11. 2.2 18 km E of El Indio, Texas
  12. 2.4 8 km WSW of Asherton, Texas
  13. 2.7 7 km ESE of El Indio, Texas
  14. 3.4 3 km S of El Indio, Texas
  15. 2.3 4 km SSE of El Indio, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.