QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

23 km NNW of Westbrook, Texas

· 7.1 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Scurry County 28 kmMitchell County 33 kmBorden County 37 kmHoward County 42 kmFisher County 70 kmNolan County 70 kmGarza County 72 kmKent County 77 kmSterling County 80 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
7.1 km below the surface
Felt
no reports yet
Nearest
Scurry County, 28 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 41 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 32.5550, -101.1120. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Scurry County, TX 28 km (17 mi) SW of here earthquakes near Scurry County
Mitchell County, TX 33 km (20 mi) NNW of here earthquakes near Mitchell County
Borden County, TX 37 km (23 mi) ESE of here earthquakes near Borden County
Howard County, TX 42 km (26 mi) NE of here earthquakes near Howard County
Fisher County, TX 70 km (43 mi) WSW of here earthquakes near Fisher County
Nolan County, TX 70 km (44 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

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

  1. 2.0 17 km SE of Coahoma, Texas
  2. 1.1 3 km SSE of Sand Springs, Texas
  3. 0.8 18 km SE of Ackerly, Texas
  4. 1.1 18 km SE of Ackerly, Texas
  5. 1.1 17 km N of Snyder, Texas
  6. 1.2 9 km NNW of Big Spring, Texas
  7. 1.3 14 km SW of Westbrook, Texas
  8. 1.2 19 km NW of Westbrook, Texas
  9. 1.4 15 km SSE of Coahoma, Texas
  10. 1.5 23 km S of Westbrook, Texas
  11. 1.6 25 km SSW of Westbrook, Texas
  12. 1.7 19 km NW of Westbrook, Texas
  13. 1.5 15 km NNW of Sand Springs, Texas
  14. 1.5 14 km NNW of Sand Springs, Texas
  15. 1.5 14 km SW 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.