QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

14 km SW of Westbrook, Texas

· 6.9 km deep · released about 950 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mitchell County 20 kmHoward County 28 kmSterling County 50 kmScurry County 56 kmBorden County 58 kmGlasscock County 59 kmCoke County 65 kmNolan County 68 kmMartin County 78 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
Magnitude
M 3.0 (ml)
Depth
6.9 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Mitchell County, 20 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 430 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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.

Where

Epicentre 32.2820, -101.1370. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mitchell County, TX 20 km (13 mi) W of here earthquakes near Mitchell County
Howard County, TX 28 km (18 mi) E of here earthquakes near Howard County
Sterling County, TX 50 km (31 mi) N of here earthquakes near Sterling County
Scurry County, TX 56 km (35 mi) SSW of here earthquakes near Scurry County
Borden County, TX 58 km (36 mi) SSE of here earthquakes near Borden County
Glasscock County, TX 59 km (36 mi) NE of here earthquakes near Glasscock County

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

Aftershocks so far

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

  1. 1.6 26 km S of Westbrook, Texas
  2. 1.7 20 km S of Westbrook, Texas
  3. 1.7 23 km S of Westbrook, Texas
  4. 1.8 23 km S of Westbrook, Texas
  5. 1.7 25 km S of Westbrook, Texas
  6. 1.8 26 km S of Westbrook, Texas
  7. 1.7 10 km SSW of Big Spring, Texas
  8. 1.6 9 km E of Coahoma, Texas
  9. 2.5 9 km ENE of Coahoma, Texas
  10. 2.0 27 km S of Westbrook, Texas
  11. 2.0 18 km S of Westbrook, Texas
  12. 2.1 18 km SSE of Westbrook, Texas
  13. 1.8 23 km S of Westbrook, Texas
  14. 1.5 24 km SSW of Westbrook, Texas
  15. 1.6 9 km SE of Big Spring, 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.