QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

19 km NW of Westbrook, Texas

· 3.5 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mitchell County 30 kmHoward County 32 kmScurry County 38 kmBorden County 39 kmSterling County 72 kmNolan County 72 kmGlasscock County 76 kmFisher County 77 kmMartin County 77 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 1.5 (ml)
Depth
3.5 km below the surface
Felt
no reports yet
Nearest
Mitchell County, 30 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 601 days ago

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

How big was it?

This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 32.4800, -101.1630. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mitchell County, TX 30 km (18 mi) NW of here earthquakes near Mitchell County
Howard County, TX 32 km (20 mi) NE of here earthquakes near Howard County
Scurry County, TX 38 km (23 mi) SW of here earthquakes near Scurry County
Borden County, TX 39 km (24 mi) SE of here earthquakes near Borden County
Sterling County, TX 72 km (45 mi) N of here earthquakes near Sterling County
Nolan County, TX 72 km (45 mi) WNW of here earthquakes near Nolan County

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

Aftershocks so far

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

  1. 2.0 27 km S of Westbrook, Texas
  2. 1.5 9 km NNW of Forsan, Texas
  3. 1.5 13 km SW of Westbrook, Texas
  4. 2.3 23 km S of Westbrook, Texas
  5. 1.8 24 km SSW of Westbrook, Texas
  6. 1.8 23 km S of Westbrook, Texas
  7. 1.8 12 km N of Snyder, Texas
  8. 2.3 9 km SSW of Big Spring, Texas
  9. 1.9 24 km SSW of Westbrook, Texas
  10. 1.6 27 km S of Westbrook, Texas
  11. 1.5 19 km NNW of Big Spring, Texas
  12. 1.5 27 km E of Forsan, Texas
  13. 2.4 28 km S of Westbrook, Texas
  14. 1.7 28 km S of Westbrook, Texas
  15. 1.5 6 km SSE of Coahoma, 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

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