QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

12 km ESE of Coahoma, Texas

· 8.3 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mitchell County 24 kmHoward County 25 kmSterling County 49 kmGlasscock County 54 kmBorden County 58 kmScurry County 59 kmCoke County 67 kmNolan County 72 kmMartin County 74 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 1.8 (ml)
Depth
8.3 km below the surface
Felt
no reports yet
Nearest
Mitchell County, 24 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 181 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 32.2610, -101.1790. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mitchell County, TX 24 km (15 mi) WSW of here earthquakes near Mitchell County
Howard County, TX 25 km (15 mi) E of here earthquakes near Howard County
Sterling County, TX 49 km (30 mi) NNW of here earthquakes near Sterling County
Glasscock County, TX 54 km (34 mi) NE of here earthquakes near Glasscock County
Borden County, TX 58 km (36 mi) SSE of here earthquakes near Borden County
Scurry County, TX 59 km (37 mi) SSW of here earthquakes near Scurry County

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

Aftershocks so far

59 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. 1.7 17 km ESE of Ackerly, Texas
  4. 2.6 5 km SSW of Westbrook, Texas
  5. 1.7 19 km SSE of Westbrook, Texas
  6. 1.6 28 km E of Forsan, Texas
  7. 1.5 20 km NW of Westbrook, Texas
  8. 1.5 5 km SSW of Westbrook, Texas
  9. 1.7 11 km W of Forsan, Texas
  10. 1.5 14 km E of Stanton, Texas
  11. 1.5 16 km SE of Coahoma, Texas
  12. 1.6 7 km ESE of Big Spring, Texas
  13. 1.5 16 km ESE of Stanton, Texas
  14. 1.6 17 km SSE of Westbrook, Texas
  15. 1.5 18 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 4.3 on 2025-10-12 — it released about 5,600 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.