QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

15 km NE of Hermleigh, Texas

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

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fisher County 24 kmScurry County 24 kmKent County 50 kmNolan County 54 kmMitchell County 55 kmStonewall County 61 kmBorden County 73 kmJones County 73 kmGarza County 77 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 (ml)
Depth
8.3 km below the surface
Felt
2 reports · strongest reported intensity V
Nearest
Fisher County, 24 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1254 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 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 32.7493, -100.6573. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fisher County, TX 24 km (15 mi) W of here earthquakes near Fisher County
Scurry County, TX 24 km (15 mi) E of here earthquakes near Scurry County
Kent County, TX 50 km (31 mi) SSE of here earthquakes near Kent County
Nolan County, TX 54 km (33 mi) NNW of here earthquakes near Nolan County
Mitchell County, TX 55 km (34 mi) NNE of here earthquakes near Mitchell County
Stonewall County, TX 61 km (38 mi) SW of here earthquakes near Stonewall County

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

Aftershocks so far

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

  1. 1.8 16 km NE of Hermleigh, Texas
  2. 1.8 16 km NE of Hermleigh, Texas
  3. 2.1 western Texas
  4. 1.6 7 km WSW of Rotan, Texas
  5. 2.3 western Texas
  6. 1.5 17 km NE of Hermleigh, Texas
  7. 1.6 15 km NE of Hermleigh, Texas
  8. 1.5 15 km NE of Hermleigh, Texas
  9. 1.6 15 km NE of Hermleigh, Texas
  10. 2.9 western Texas
  11. 1.9 17 km NNE of Hermleigh, Texas
  12. 1.5 17 km NE of Hermleigh, Texas
  13. 1.6 15 km NE of Hermleigh, Texas
  14. 1.8 17 km NNE of Hermleigh, Texas
  15. 1.7 17 km NE 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.0 on 2019-09-30 — it released about 22 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.