QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

7 km N of Westbrook, Texas

· 5.9 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mitchell County 15 kmScurry County 36 kmHoward County 43 kmBorden County 54 kmNolan County 56 kmSterling County 66 kmFisher County 66 kmCoke County 70 kmGlasscock 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
Magnitude
M 1.9 (ml)
Depth
5.9 km below the surface
Felt
no reports yet
Nearest
Mitchell County, 15 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 173 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 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 32.4250, -101.0000. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mitchell County, TX 15 km (9 mi) NNW of here earthquakes near Mitchell County
Scurry County, TX 36 km (23 mi) SSW of here earthquakes near Scurry County
Howard County, TX 43 km (27 mi) ENE of here earthquakes near Howard County
Borden County, TX 54 km (34 mi) SE of here earthquakes near Borden County
Nolan County, TX 56 km (35 mi) WNW of here earthquakes near Nolan County
Sterling County, TX 66 km (41 mi) N of here earthquakes near Sterling County

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

Aftershocks so far

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

  1. 1.6 24 km E of Forsan, Texas
  2. 1.5 21 km E of Forsan, Texas
  3. 2.6 5 km SSW of Westbrook, Texas
  4. 1.7 19 km SSE of Westbrook, Texas
  5. 1.6 28 km E of Forsan, Texas
  6. 1.5 16 km NNE of Hermleigh, Texas
  7. 1.5 20 km NW of Westbrook, Texas
  8. 2.0 16 km NNE of Hermleigh, Texas
  9. 2.7 16 km NNE of Hermleigh, Texas
  10. 1.8 16 km NNE of Hermleigh, Texas
  11. 2.8 16 km NNE of Hermleigh, Texas
  12. 1.5 5 km SSW of Westbrook, Texas
  13. 1.5 16 km SE of Coahoma, Texas
  14. 1.6 7 km ESE of Big Spring, Texas
  15. 1.6 17 km SSE 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.1 on 2024-07-26 — it released about 63,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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