QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

29 km WSW of Ackerly, Texas

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

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Martin County 18 kmDawson County 32 kmHoward County 58 kmAndrews County 60 kmBorden County 63 kmGaines County 65 kmMidland County 72 kmGlasscock County 81 kmLynn County 82 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
9.3 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Martin County, 18 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 677 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 32.4640, -102.0250. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Martin County, TX 18 km (11 mi) NNW of here earthquakes near Martin County
Dawson County, TX 32 km (20 mi) SSW of here earthquakes near Dawson County
Howard County, TX 58 km (36 mi) WNW of here earthquakes near Howard County
Andrews County, TX 60 km (37 mi) ENE of here earthquakes near Andrews County
Borden County, TX 63 km (39 mi) WSW of here earthquakes near Borden County
Gaines County, TX 65 km (40 mi) ESE of here earthquakes near Gaines County

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

Aftershocks so far

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

  1. 1.6 39 km SSW of Los Ybanez, Texas
  2. 2.4 western Texas
  3. 1.8 36 km SSW of Los Ybanez, Texas
  4. 2.0 36 km SSW of Los Ybanez, Texas
  5. 2.6 38 km SSW of Los Ybanez, Texas
  6. 1.7 37 km NW of Stanton, Texas
  7. 1.9 37 km NW of Stanton, Texas
  8. 2.3 38 km SSW of Los Ybanez, Texas
  9. 1.6 19 km SE of Ackerly, Texas
  10. 1.6 38 km WSW of Ackerly, Texas
  11. 1.5 38 km SSW of Los Ybanez, Texas
  12. 2.5 19 km N of Stanton, Texas
  13. 2.4 17 km N of Stanton, Texas
  14. 1.9 13 km NNE of Midland, Texas
  15. 1.5 38 km SSW of Los Ybanez, 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 1,400 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.