QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5mwr

21 km N of Snyder, Texas

· 5.0 km deep · released about 2.7 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Scurry County 19 kmKent County 32 kmFisher County 48 kmGarza County 50 kmBorden County 56 kmStonewall County 66 kmMitchell County 68 kmDickens County 79 kmNolan County 79 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 3.5 (mwr)
Depth
5.0 km below the surface
Felt
60 reports · strongest reported intensity IV
Measured shaking
intensity V (ShakeMap)
Nearest
Scurry County, 19 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2070 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 60 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 63,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,000× the energy of this one
  4. This earthquake M 3.5 about 2.7 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 5.6× 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 32.9113, -100.8806. 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
Fisher County, TX 48 km (30 mi) WNW of here earthquakes near Fisher County
Garza County, TX 50 km (31 mi) SE of here earthquakes near Garza County
Borden County, TX 56 km (35 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. 1.9 21 km N of Snyder, Texas
  2. 2.0 18 km NNW of Snyder, Texas
  3. 1.8 22 km N of Snyder, Texas
  4. 1.8 15 km NNW of Snyder, Texas
  5. 2.3 10 km NE of Hermleigh, Texas
  6. 1.7 10 km NNE of Hermleigh, Texas
  7. 2.7 11 km NE of Hermleigh, Texas
  8. 1.6 11 km NE of Hermleigh, Texas
  9. 2.3 11 km NE of Hermleigh, Texas
  10. 1.6 11 km NE of Hermleigh, Texas
  11. 2.5 10 km NE of Hermleigh, Texas
  12. 2.1 11 km NE of Hermleigh, Texas
  13. 1.8 21 km N of Snyder, Texas
  14. 1.9 11 km NNE of Hermleigh, Texas
  15. 2.1 33 km NNE of Snyder, 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 5.6 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.