QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

31 km WSW of Ackerly, Texas

· 8.9 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Martin County 13 kmDawson County 38 kmHoward County 57 kmAndrews County 59 kmBorden County 66 kmMidland County 66 kmGaines County 68 kmGlasscock County 77 kmEctor County 78 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 2.5 (ml)
Depth
8.9 km below the surface
Felt
no reports yet
Nearest
Martin County, 13 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 345 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 32.4110, -102.0270. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Martin County, TX 13 km (8 mi) NNW of here earthquakes near Martin County
Dawson County, TX 38 km (23 mi) SSW of here earthquakes near Dawson County
Howard County, TX 57 km (35 mi) WNW of here earthquakes near Howard County
Andrews County, TX 59 km (36 mi) E of here earthquakes near Andrews County
Borden County, TX 66 km (41 mi) WSW of here earthquakes near Borden County
Midland County, TX 66 km (41 mi) N of here earthquakes near Midland 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 E of Midland, Texas
  2. 2.6 13 km NNW of Midland, Texas
  3. 2.1 13 km NNW of Midland, Texas
  4. 1.7 14 km NNW of Midland, Texas
  5. 2.7 14 km NNW of Midland, Texas
  6. 2.3 19 km NW of Stanton, Texas
  7. 2.8 11 km NNE of Midland, Texas
  8. 1.8 11 km NNE of Midland, Texas
  9. 1.6 19 km NW of Stanton, Texas
  10. 2.2 37 km ENE of McKinney Acres, Texas
  11. 1.9 33 km WSW of Ackerly, Texas
  12. 1.8 36 km NW of Stanton, Texas
  13. 2.1 36 km NW of Stanton, Texas
  14. 2.3 18 km N of Stanton, Texas
  15. 1.8 13 km W of Stanton, 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 11,000 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.