QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

20 km NW of Sterling City, Texas

· 3.9 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sterling County 16 kmGlasscock County 39 kmMitchell County 42 kmHoward County 47 kmCoke County 48 kmIrion County 75 kmReagan County 75 kmNolan County 77 kmMidland County 84 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 1.6 (ml)
Depth
3.9 km below the surface
Felt
no reports yet
Nearest
Sterling County, 16 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 494 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 31.9690, -101.1290. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sterling County, TX 16 km (10 mi) NNW of here earthquakes near Sterling County
Glasscock County, TX 39 km (24 mi) ENE of here earthquakes near Glasscock County
Mitchell County, TX 42 km (26 mi) SSW of here earthquakes near Mitchell County
Howard County, TX 47 km (29 mi) SE of here earthquakes near Howard County
Coke County, TX 48 km (30 mi) WNW of here earthquakes near Coke County
Irion County, TX 75 km (47 mi) N of here earthquakes near Irion County

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

Aftershocks so far

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

  1. 2.8 22 km S of Westbrook, Texas
  2. 1.5 23 km S of Westbrook, Texas
  3. 2.0 22 km S of Westbrook, Texas
  4. 1.6 10 km SW of Forsan, Texas
  5. 2.4 10 km W of Forsan, Texas
  6. 2.2 10 km W of Forsan, Texas
  7. 2.5 25 km SSW of Westbrook, Texas
  8. 2.5 24 km E of Forsan, Texas
  9. 1.5 24 km E of Forsan, Texas
  10. 2.2 23 km E of Forsan, Texas
  11. 1.8 18 km S of Westbrook, Texas
  12. 1.9 9 km NNW of Forsan, Texas
  13. 1.7 18 km SSE of Westbrook, Texas
  14. 1.6 26 km S of Westbrook, Texas
  15. 1.7 20 km S of Westbrook, 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.