QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

Earthquake near Robert Lee, TX

No earthquake was likely felt in Robert Lee in the 24 hours to 3:37 am CST (09:37 UTC). The last one was M 3.2, 121 km (75 mi) WSW, at 3:33 pm CDT on 24 September 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Robert Lee

This page: a magnitude 2.3 earthquake was recorded 26 km (16 mi) west-northwest of Robert Lee, TX, at 9:26 am CDT on 23 June 2024 (14:26 UTC), 2.3 km deep.

USGS: 26 km WNW of Robert Lee, Texas

68 km (43 mi) NNW of San Angelo, TX

9:26 am CDT, Jun 23, 2024 · · 2.3 km deep · released about 85 lb of TNT

10 km30 km60 km120 km N Coke County 17 kmSterling County 36 kmMitchell County 38 kmNolan County 45 kmTom Green County 72 kmRunnels County 73 kmHoward County 74 kmGlasscock County 76 kmIrion County 82 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
9:26 am CDT on 23 June 2024 ()
Where
26 km (16 mi) west-northwest of Robert Lee, TX · earthquakes near Robert Lee
Texas today
every earthquake in Texas in the last 24 hours
Magnitude
M 2.3 (ml)
Depth
2.3 km below the surface
Felt
no reports yet
Nearest
Coke County, 17 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 871 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 37 km (23 mi) from the epicentre. In Robert Lee, 26 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.

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 32.0090, -100.7290. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Coke County, TX 17 km (11 mi) SSE earthquakes near Coke County
Sterling County, TX 36 km (23 mi) WSW earthquakes near Sterling County
Mitchell County, TX 38 km (23 mi) NNW earthquakes near Mitchell County
Nolan County, TX 45 km (28 mi) NE earthquakes near Nolan County
Tom Green County, TX 72 km (45 mi) SSE earthquakes near Tom Green County
Runnels County, TX 73 km (45 mi) ESE earthquakes near Runnels County

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

Aftershocks so far

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

  1. 1.9 23 km SE of Coahoma, Texas
  2. 1.7 23 km SSW of Westbrook, Texas
  3. 1.6 25 km E of Forsan, Texas
  4. 1.5 23 km SSW of Westbrook, Texas
  5. 2.5 24 km SSW of Westbrook, Texas
  6. 2.2 23 km S of Westbrook, Texas
  7. 1.7 5 km WSW of Westbrook, Texas
  8. 1.7 27 km E of Forsan, Texas
  9. 1.7 24 km SSW of Westbrook, Texas
  10. 1.6 22 km S of Westbrook, Texas
  11. 2.3 23 km S of Westbrook, Texas
  12. 1.7 23 km S of Westbrook, Texas
  13. 2.1 23 km SSW of Westbrook, Texas
  14. 1.7 27 km S of Westbrook, Texas
  15. 2.2 23 km SSW of Westbrook, 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.