QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

12 km S of Ackerly, Texas

· 11 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Martin County 27 kmHoward County 28 kmDawson County 43 kmBorden County 44 kmGlasscock County 63 kmMidland County 72 kmMitchell County 75 kmScurry County 83 kmLynn County 86 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 3.3 (ml)
Depth
11 km below the surface
Felt
5 reports · strongest reported intensity IV
Nearest
Martin County, 27 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1734 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 5 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× 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 32.4142, -101.7077. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Martin County, TX 27 km (16 mi) ENE of here earthquakes near Martin County
Howard County, TX 28 km (17 mi) WNW of here earthquakes near Howard County
Dawson County, TX 43 km (27 mi) SSE of here earthquakes near Dawson County
Borden County, TX 44 km (27 mi) SW of here earthquakes near Borden County
Glasscock County, TX 63 km (39 mi) NNW of here earthquakes near Glasscock County
Midland County, TX 72 km (45 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

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

  1. 1.9 33 km NNW of Midland, Texas
  2. 1.5 33 km NNW of Midland, Texas
  3. 1.6 37 km ENE of McKinney Acres, Texas
  4. 1.9 16 km SSE of Stanton, Texas
  5. 2.3 34 km WSW of Ackerly, Texas
  6. 1.7 34 km NNW of Midland, Texas
  7. 2.0 16 km SSE of Ackerly, Texas
  8. 2.1 17 km SSE of Ackerly, Texas
  9. 3.0 16 km SSE of Ackerly, Texas
  10. 2.3 38 km SSW of Los Ybanez, Texas
  11. 2.2 37 km SSW of Los Ybanez, Texas
  12. 1.6 20 km NNW of Midland, Texas
  13. 2.2 29 km WSW of Ackerly, Texas
  14. 3.0 34 km SSW of Los Ybanez, Texas
  15. 1.6 16 km SSE 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 4.0 on 2020-12-31 — it released about 11 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.