QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

29 km W of Fort Stockton, Texas

· 3.7 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Pecos County 48 kmReeves County 66 kmWard County 67 kmCrane County 87 kmJeff Davis County 101 kmWinkler County 103 kmLoving County 109 kmUpton County 120 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 2.1 (ml)
Depth
3.7 km below the surface
Felt
no reports yet
Nearest
Pecos County, 48 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 405 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 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 30.9170, -103.1910. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Pecos County, TX 48 km (30 mi) WNW of here earthquakes near Pecos County
Reeves County, TX 66 km (41 mi) SE of here earthquakes near Reeves County
Ward County, TX 67 km (41 mi) S of here earthquakes near Ward County
Crane County, TX 87 km (54 mi) SW of here earthquakes near Crane County
Jeff Davis County, TX 101 km (63 mi) ENE of here earthquakes near Jeff Davis County
Winkler County, TX 103 km (64 mi) S of here earthquakes near Winkler County

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

Aftershocks so far

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

  1. 1.6 9 km E of Balmorhea, Texas
  2. 2.0 32 km SSE of Lindsay, Texas
  3. 2.9 12 km E of Balmorhea, Texas
  4. 1.5 10 km E of Balmorhea, Texas
  5. 1.5 22 km ESE of Balmorhea, Texas
  6. 1.7 30 km ENE of Balmorhea, Texas
  7. 1.7 20 km SW of Coyanosa, Texas
  8. 1.9 24 km SW of Coyanosa, Texas
  9. 1.8 28 km ESE of Balmorhea, Texas
  10. 1.7 11 km SSE of Lindsay, Texas
  11. 1.7 6 km E of Balmorhea, Texas
  12. 1.6 34 km SW of Coyanosa, Texas
  13. 1.8 28 km SW of Coyanosa, Texas
  14. 1.8 17 km SE of Lindsay, Texas
  15. 1.9 19 km SE of Lindsay, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.