QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Earthquake near Jourdanton, TX

Yes: an earthquake was likely felt in Jourdanton in the last 24 hours. M 3.1, 39 km (24 mi) W of Jourdanton, at 3:20 am CST on 12 November 2026 (09:20 UTC); the estimated shaking in Jourdanton was intensity III (weak). Every earthquake near Jourdanton

This page: a magnitude 2.1 earthquake was recorded 5 km (3 mi) west of Jourdanton, TX, at 11:07 am CDT on 26 July 2023 (16:07 UTC), 4.1 km deep.

USGS: 5 km W of Jourdanton, Texas

61 km (38 mi) S of San Antonio, TX

11:07 am CDT, Jul 26, 2023 · · 4.1 km deep · released about 43 lb of TNT

10 km30 km60 km120 km N Atascosa County 7 kmFrio County 50 kmWilson County 58 kmMcMullen County 59 kmBexar County 60 kmMedina County 70 kmKarnes County 73 kmLive Oak County 78 kmLa Salle County 79 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
11:07 am CDT on 26 July 2023 ()
Where
5 km (3 mi) west of Jourdanton, TX · earthquakes near Jourdanton
Texas today
every earthquake in Texas in the last 24 hours
Magnitude
M 2.1 (ml)
Depth
4.1 km below the surface
Felt
no reports yet
Nearest
Atascosa County, 7 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 498 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 28 km (17 mi) from the epicentre. In Jourdanton, 5 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Jourdanton 5 km, intensity II · Charlotte 12 km, intensity II · Pleasanton 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 28.9140, -98.6010. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Atascosa County, TX 7 km (4 mi) ESE earthquakes near Atascosa County
Frio County, TX 50 km (31 mi) W earthquakes near Frio County
Wilson County, TX 58 km (36 mi) ENE earthquakes near Wilson County
McMullen County, TX 59 km (37 mi) S earthquakes near McMullen County
Bexar County, TX 60 km (37 mi) N earthquakes near Bexar County
Medina County, TX 70 km (43 mi) NW earthquakes near Medina County

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

Aftershocks so far

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

  1. 1.8 19 km NW of Three Rivers, Texas
  2. 1.8 5 km ENE of Christine, Texas
  3. 1.6 15 km WSW of Falls City, Texas
  4. 2.4 6 km ENE of Christine, Texas
  5. 1.8 5 km E of Christine, Texas
  6. 2.1 16 km WSW of Falls City, Texas
  7. 1.6 15 km WSW of Falls City, Texas
  8. 1.6 16 km E of Pleasanton, Texas
  9. 1.6 7 km ENE of Christine, Texas
  10. 1.5 6 km ENE of Christine, Texas
  11. 2.2 6 km ENE of Christine, Texas
  12. 1.5 6 km ENE of Christine, Texas
  13. 2.2 18 km W of Pawnee, Texas
  14. 2.0 19 km W of Pawnee, Texas
  15. 1.8 19 km W of Pawnee, 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.