QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

21 km S of Ackerly, Texas

· 8.0 km deep · released about 60 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Martin County 24 kmHoward County 26 kmDawson County 51 kmBorden County 52 kmGlasscock County 55 kmMidland County 64 kmMitchell County 74 kmSterling County 83 kmAndrews County 87 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 2.2 (ml)
Depth
8.0 km below the surface
Felt
no reports yet
Nearest
Martin County, 24 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 245 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 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 32.3320, -101.7100. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Martin County, TX 24 km (15 mi) E of here earthquakes near Martin County
Howard County, TX 26 km (16 mi) W of here earthquakes near Howard County
Dawson County, TX 51 km (32 mi) SSE of here earthquakes near Dawson County
Borden County, TX 52 km (32 mi) SSW of here earthquakes near Borden County
Glasscock County, TX 55 km (34 mi) NNW of here earthquakes near Glasscock County
Midland County, TX 64 km (40 mi) NNE of here earthquakes near Midland County

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

Aftershocks so far

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

  1. 1.5 37 km ENE of McKinney Acres, Texas
  2. 3.2 13 km N of Stanton, Texas
  3. 1.7 11 km S of Forsan, Texas
  4. 1.5 6 km SSE of Ackerly, Texas
  5. 2.7 12 km WSW of Stanton, Texas
  6. 2.9 12 km WSW of Stanton, Texas
  7. 1.5 40 km ENE of McKinney Acres, Texas
  8. 3.0 37 km SSW of Lamesa, Texas
  9. 1.9 15 km E of Stanton, Texas
  10. 1.7 18 km N of Stanton, Texas
  11. 1.9 10 km SSW of Forsan, Texas
  12. 1.5 39 km WSW of Ackerly, Texas
  13. 2.0 13 km W of Stanton, Texas
  14. 1.6 11 km WSW of Stanton, Texas
  15. 1.7 11 km WSW 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 32,000 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.