QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

33 km WSW of Ackerly, Texas

· 7.7 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Martin County 13 kmDawson County 38 kmAndrews County 57 kmHoward County 58 kmMidland County 66 kmGaines County 66 kmBorden County 67 kmEctor County 77 kmGlasscock 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 3.3 (ml)
Depth
7.7 km below the surface
Felt
5 reports · strongest reported intensity III
Nearest
Martin County, 13 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 660 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 32.4090, -102.0440. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Martin County, TX 13 km (8 mi) NW of here earthquakes near Martin County
Dawson County, TX 38 km (24 mi) SSW of here earthquakes near Dawson County
Andrews County, TX 57 km (35 mi) E of here earthquakes near Andrews County
Howard County, TX 58 km (36 mi) WNW of here earthquakes near Howard County
Midland County, TX 66 km (41 mi) N of here earthquakes near Midland County
Gaines County, TX 66 km (41 mi) SE of here earthquakes near Gaines County

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

Aftershocks so far

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

  1. 1.7 10 km ENE of Stanton, Texas
  2. 2.2 22 km SW of Ackerly, Texas
  3. 2.3 33 km WSW of Ackerly, Texas
  4. 1.8 40 km WSW of Ackerly, Texas
  5. 1.9 33 km WSW of Ackerly, Texas
  6. 1.5 35 km WSW of Ackerly, Texas
  7. 2.4 33 km WSW of Ackerly, Texas
  8. 1.8 38 km NW of Stanton, Texas
  9. 2.6 20 km NNW of Stanton, Texas
  10. 1.5 36 km WSW of Ackerly, Texas
  11. 1.5 34 km WSW of Ackerly, Texas
  12. 2.7 16 km NW of Stanton, Texas
  13. 1.8 36 km WSW of Ackerly, Texas
  14. 1.5 37 km ENE of McKinney Acres, Texas
  15. 1.9 20 km NNW 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 710 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.