QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

Earthquake near Snyder, TX

No earthquake was likely felt in Snyder in the 24 hours to 6:17 am CST (12:17 UTC). The last one was M 2.9, 44 km (28 mi) SSW, at 6:28 pm CST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Snyder

This page: a magnitude 2.3 earthquake was recorded 13 km (8 mi) north of Snyder, TX, at 12:20 pm CDT on 18 August 2021 (17:20 UTC), 4.6 km deep.

USGS: 13 km N of Snyder, Texas

12:20 pm CDT, Aug 18, 2021 · · 4.6 km deep · released about 85 lb of TNT

10 km30 km60 km120 km N Scurry County 11 kmKent County 42 kmBorden County 47 kmGarza County 51 kmFisher County 52 kmMitchell County 59 kmStonewall County 75 kmHoward County 75 kmNolan County 76 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
12:20 pm CDT on 18 August 2021 ()
Where
13 km (8 mi) north of Snyder, TX · earthquakes near Snyder
Texas today
every earthquake in Texas in the last 24 hours
Magnitude
M 2.3 (ml)
Depth
4.6 km below the surface
Felt
no reports yet
Nearest
Scurry County, 11 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1912 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 37 km (23 mi) from the epicentre. In Snyder, 13 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Snyder 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

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.

For this area

The largest earthquake within 50 km since 2016 was M 4.0 on 2019-09-30 — about 350 times the energy of this one.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 32.8354, -100.9445. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Scurry County, TX 11 km (7 mi) SSE earthquakes near Scurry County
Kent County, TX 42 km (26 mi) NNE earthquakes near Kent County
Borden County, TX 47 km (30 mi) WSW earthquakes near Borden County
Garza County, TX 51 km (32 mi) NW earthquakes near Garza County
Fisher County, TX 52 km (32 mi) ESE earthquakes near Fisher County
Mitchell County, TX 59 km (37 mi) S earthquakes near Mitchell County

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

Aftershocks so far

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

  1. 2.9 17 km NNE of Hermleigh, Texas
  2. 2.4 western Texas
  3. 2.7 western Texas
  4. 2.2 27 km SW of Girard, Texas
  5. 2.3 western Texas
  6. 2.0 19 km N of Snyder, Texas
  7. 1.9 17 km NNE of Hermleigh, Texas
  8. 3.2 18 km NNE of Hermleigh, Texas
  9. 3.0 17 km NNE of Hermleigh, Texas
  10. 2.6 16 km NNE of Hermleigh, Texas
  11. 3.2 13 km N of Snyder, Texas
  12. 2.0 8 km NNE of Hermleigh, Texas
  13. 2.8 13 km NNW of Snyder, Texas
  14. 2.1 18 km NNE of Hermleigh, Texas
  15. 2.8 17 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.