QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

27 km SW of Girard, Texas

· 7.1 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kent County 10 kmGarza County 40 kmDickens County 48 kmScurry County 50 kmStonewall County 58 kmCrosby County 61 kmFisher County 67 kmBorden County 73 kmKing County 75 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 2.3 (ml)
Depth
7.1 km below the surface
Felt
no reports yet
Nearest
Kent County, 10 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 495 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 33.1920, -100.8740. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kent County, TX 10 km (6 mi) W of here earthquakes near Kent County
Garza County, TX 40 km (25 mi) E of here earthquakes near Garza County
Dickens County, TX 48 km (30 mi) S of here earthquakes near Dickens County
Scurry County, TX 50 km (31 mi) N of here earthquakes near Scurry County
Stonewall County, TX 58 km (36 mi) W of here earthquakes near Stonewall County
Crosby County, TX 61 km (38 mi) SE of here earthquakes near Crosby County

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

Aftershocks so far

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

  1. 2.1 10 km W of Rotan, Texas
  2. 1.8 27 km N of Snyder, Texas
  3. 1.6 8 km WNW of Rotan, Texas
  4. 2.0 7 km WNW of Rotan, Texas
  5. 1.6 7 km W of Rotan, Texas
  6. 1.6 8 km WNW of Rotan, Texas
  7. 1.5 7 km WNW of Rotan, Texas
  8. 1.5 7 km W of Rotan, Texas
  9. 1.8 27 km N of Snyder, Texas
  10. 1.5 8 km WNW of Rotan, Texas
  11. 1.7 19 km NNW of Snyder, Texas
  12. 1.5 11 km WSW of Rotan, Texas
  13. 1.6 19 km NNW of Snyder, Texas
  14. 1.5 19 km NNE of Hermleigh, Texas
  15. 1.7 18 km WSW of Rotan, 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 2019-09-30 — it released about 350 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.