QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

17 km SSE of Ackerly, Texas

· 5.7 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Howard County 20 kmMartin County 33 kmBorden County 43 kmDawson County 50 kmGlasscock County 58 kmMitchell County 66 kmMidland County 73 kmScurry County 77 kmSterling County 81 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 3.1 (ml)
Depth
5.7 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Howard County, 20 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 932 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 250,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 11,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,900× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× more

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 32.3870, -101.6220. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Howard County, TX 20 km (12 mi) WNW of here earthquakes near Howard County
Martin County, TX 33 km (21 mi) ENE of here earthquakes near Martin County
Borden County, TX 43 km (27 mi) SSW of here earthquakes near Borden County
Dawson County, TX 50 km (31 mi) SE of here earthquakes near Dawson County
Glasscock County, TX 58 km (36 mi) N of here earthquakes near Glasscock County
Mitchell County, TX 66 km (41 mi) W of here earthquakes near Mitchell County

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

Aftershocks so far

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

  1. 1.7 36 km NW of Stanton, Texas
  2. 1.5 21 km N of Stanton, Texas
  3. 1.5 21 km N of Stanton, Texas
  4. 1.5 36 km SSW of Los Ybanez, Texas
  5. 1.9 17 km NW of Stanton, Texas
  6. 1.5 37 km ENE of McKinney Acres, Texas
  7. 1.7 12 km NE of Coahoma, Texas
  8. 1.6 19 km NW of Stanton, Texas
  9. 1.5 31 km WSW of Ackerly, Texas
  10. 2.6 32 km WSW of Ackerly, Texas
  11. 2.2 32 km WSW of Ackerly, Texas
  12. 2.3 38 km ENE of McKinney Acres, Texas
  13. 1.5 33 km WSW of Ackerly, Texas
  14. 1.6 32 km WSW of Ackerly, Texas
  15. 1.7 31 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 4.6 on 2021-12-28 — it released about 180 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.