QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

9 km SSE of Gardendale, Texas

· 7.2 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ector County 22 kmMidland County 34 kmAndrews County 50 kmMartin County 53 kmCrane County 60 kmWinkler County 70 kmUpton County 71 kmGlasscock County 77 kmWard County 88 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 2.1 (ml)
Depth
7.2 km below the surface
Felt
6 reports · strongest reported intensity III
Nearest
Ector County, 22 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1723 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 6 people have reported feeling it to USGS.

How big was it?

This earthquake released about 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 31.9455, -102.3272. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ector County, TX 22 km (14 mi) ENE of here earthquakes near Ector County
Midland County, TX 34 km (21 mi) WNW of here earthquakes near Midland County
Andrews County, TX 50 km (31 mi) SE of here earthquakes near Andrews County
Martin County, TX 53 km (33 mi) SW of here earthquakes near Martin County
Crane County, TX 60 km (37 mi) NNE of here earthquakes near Crane County
Winkler County, TX 70 km (43 mi) E of here earthquakes near Winkler County

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

Aftershocks so far

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

  1. 1.5 9 km NNE of Odessa, Texas
  2. 2.6 10 km SSE of Midland, Texas
  3. 3.2 14 km ENE of Gardendale, Texas
  4. 1.5 33 km NNW of Midland, Texas
  5. 1.8 16 km NW of Midland, Texas
  6. 1.7 16 km NW of Midland, Texas
  7. 1.6 16 km NW of Midland, Texas
  8. 1.8 16 km NW of Midland, Texas
  9. 2.3 16 km NW of Midland, Texas
  10. 1.9 33 km NNW of Midland, Texas
  11. 1.5 33 km NNW of Midland, Texas
  12. 2.1 10 km NE of Odessa, Texas
  13. 1.5 10 km NE of Odessa, Texas
  14. 1.9 10 km NNE of Odessa, Texas
  15. 1.5 10 km NNE of Odessa, 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.