QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1mb_lg

20 km N of Snyder, Texas

· 4.9 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Scurry County 18 kmKent County 34 kmGarza County 48 kmFisher County 50 kmBorden County 53 kmMitchell County 67 kmStonewall County 68 kmDickens County 80 kmNolan County 80 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 3.1 (mb_lg)
Depth
4.9 km below the surface
Felt
4 reports · strongest reported intensity III
Nearest
Scurry County, 18 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2818 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 250,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 11,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,900× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× 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 32.9043, -100.9065. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Scurry County, TX 18 km (11 mi) N of here earthquakes near Scurry County
Kent County, TX 34 km (21 mi) SSW of here earthquakes near Kent County
Garza County, TX 48 km (30 mi) SE of here earthquakes near Garza County
Fisher County, TX 50 km (31 mi) WNW of here earthquakes near Fisher County
Borden County, TX 53 km (33 mi) ENE of here earthquakes near Borden County
Mitchell County, TX 67 km (41 mi) N of here earthquakes near Mitchell County

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

Aftershocks so far

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

  1. 2.0 11 km NNE of Hermleigh, Texas
  2. 2.1 11 km NE of Hermleigh, Texas
  3. 1.6 14 km N of Snyder, Texas
  4. 3.1 18 km NNW of Snyder, Texas
  5. 2.3 11 km NE of Hermleigh, Texas
  6. 1.6 24 km N of Snyder, Texas
  7. 1.5 18 km NNE of Hermleigh, Texas
  8. 1.7 18 km NNE of Hermleigh, Texas
  9. 2.0 11 km NE of Hermleigh, Texas
  10. 1.7 11 km NE of Hermleigh, Texas
  11. 2.0 11 km NE of Hermleigh, Texas
  12. 1.7 11 km NE of Hermleigh, Texas
  13. 2.1 10 km NE of Hermleigh, Texas
  14. 2.6 13 km NE of Hermleigh, Texas
  15. 1.6 11 km NNE of Hermleigh, 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.