QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

31 km E of McKinney Acres, Texas

· 11 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Martin County 22 kmAndrews County 42 kmMidland County 54 kmEctor County 56 kmDawson County 57 kmGaines County 66 kmHoward County 71 kmGlasscock County 78 kmBorden 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 2.9 (ml)
Depth
11 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Martin County, 22 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1786 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 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 32.2760, -102.1911. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Martin County, TX 22 km (14 mi) W of here earthquakes near Martin County
Andrews County, TX 42 km (26 mi) E of here earthquakes near Andrews County
Midland County, TX 54 km (34 mi) NNW of here earthquakes near Midland County
Ector County, TX 56 km (35 mi) NE of here earthquakes near Ector County
Dawson County, TX 57 km (35 mi) SSW of here earthquakes near Dawson 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

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

  1. 3.7 14 km ENE of Gardendale, Texas
  2. 3.6 14 km ENE of Gardendale, Texas
  3. 3.1 14 km ENE of Gardendale, Texas
  4. 1.9 10 km NNE of Odessa, Texas
  5. 2.3 10 km SSE of Gardendale, Texas
  6. 2.0 38 km SSW of Los Ybanez, Texas
  7. 2.0 20 km NW of Stanton, Texas
  8. 2.1 35 km SSW of Los Ybanez, Texas
  9. 2.4 16 km NW of Midland, Texas
  10. 2.2 10 km NNE of Odessa, Texas
  11. 2.0 6 km SE of Gardendale, Texas
  12. 2.4 7 km ESE of Gardendale, Texas
  13. 2.7 15 km NNW of Midland, Texas
  14. 3.5 15 km NNW of Midland, Texas
  15. 2.0 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 4.0 on 2020-12-31 — it released about 45 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.