QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

31 km ENE of McKinney Acres, Texas

· 6.5 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Martin County 23 kmAndrews County 42 kmDawson County 49 kmGaines County 59 kmMidland County 63 kmEctor County 64 kmHoward County 72 kmBorden County 83 kmGlasscock County 84 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
6.5 km below the surface
Felt
no reports yet
Nearest
Martin County, 23 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 492 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 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 32.3590, -102.1990. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Martin County, TX 23 km (14 mi) WNW of here earthquakes near Martin County
Andrews County, TX 42 km (26 mi) E of here earthquakes near Andrews County
Dawson County, TX 49 km (30 mi) SSW of here earthquakes near Dawson County
Gaines County, TX 59 km (37 mi) SE of here earthquakes near Gaines County
Midland County, TX 63 km (39 mi) NNW of here earthquakes near Midland County
Ector County, TX 64 km (40 mi) NNE of here earthquakes near Ector County

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

Aftershocks so far

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

  1. 1.5 14 km W of Stanton, Texas
  2. 1.7 34 km WSW of Ackerly, Texas
  3. 1.7 13 km WSW of Stanton, Texas
  4. 1.5 13 km WSW of Stanton, Texas
  5. 1.7 3 km N of Stanton, Texas
  6. 2.0 12 km W of Stanton, Texas
  7. 1.7 33 km SSW of Los Ybanez, Texas
  8. 2.4 15 km NW of Midland, Texas
  9. 1.7 5 km SE of Gardendale, Texas
  10. 1.6 33 km ENE of McKinney Acres, Texas
  11. 2.5 21 km NNW of Stanton, Texas
  12. 1.9 38 km ENE of McKinney Acres, Texas
  13. 2.1 12 km WSW of Stanton, Texas
  14. 2.5 38 km ENE of McKinney Acres, Texas
  15. 1.7 35 km WSW of Ackerly, 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 5.2 on 2022-12-16 — it released about 45,000 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.