QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

21 km N of Snyder, Texas

· 4.4 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Scurry County 19 kmKent County 32 kmGarza County 49 kmFisher County 49 kmBorden County 55 kmStonewall County 66 kmMitchell County 68 kmDickens County 79 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 2.1 (ml)
Depth
4.4 km below the surface
Felt
no reports yet
Nearest
Scurry County, 19 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1944 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 32.9141, -100.8888. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Scurry County, TX 19 km (12 mi) N of here earthquakes near Scurry County
Kent County, TX 32 km (20 mi) SSW of here earthquakes near Kent County
Garza County, TX 49 km (30 mi) SE of here earthquakes near Garza County
Fisher County, TX 49 km (31 mi) WNW of here earthquakes near Fisher County
Borden County, TX 55 km (34 mi) ENE of here earthquakes near Borden County
Stonewall County, TX 66 km (41 mi) WSW of here earthquakes near Stonewall 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. 2.1 18 km WSW of Rotan, Texas
  2. 2.8 18 km NE of Hermleigh, Texas
  3. 2.0 13 km N of Snyder, Texas
  4. 2.1 14 km N of Snyder, Texas
  5. 3.1 17 km NNE of Hermleigh, Texas
  6. 2.9 14 km N of Snyder, Texas
  7. 2.2 18 km NNE of Hermleigh, Texas
  8. 2.5 14 km N of Snyder, Texas
  9. 2.0 25 km N of Snyder, Texas
  10. 2.4 19 km N of Snyder, Texas
  11. 2.1 17 km NNE of Hermleigh, Texas
  12. 2.7 18 km NNE of Hermleigh, Texas
  13. 2.3 18 km NNE of Hermleigh, Texas
  14. 2.2 10 km NNE of Hermleigh, Texas
  15. 2.4 11 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 710 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.