QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

15 km NNE of Hermleigh, Texas

· 9.5 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Scurry County 22 kmFisher County 26 kmKent County 48 kmNolan County 56 kmMitchell County 56 kmStonewall County 61 kmBorden County 71 kmGarza County 74 kmJones County 75 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 1.8 (ml)
Depth
9.5 km below the surface
Felt
no reports yet
Nearest
Scurry County, 22 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 789 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 32.7620, -100.6810. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Scurry County, TX 22 km (14 mi) E of here earthquakes near Scurry County
Fisher County, TX 26 km (16 mi) W of here earthquakes near Fisher County
Kent County, TX 48 km (30 mi) S of here earthquakes near Kent County
Nolan County, TX 56 km (35 mi) NNW of here earthquakes near Nolan County
Mitchell County, TX 56 km (35 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

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

  1. 2.0 14 km NE of Hermleigh, Texas
  2. 1.7 16 km NNE of Hermleigh, Texas
  3. 1.5 14 km NNE of Hermleigh, Texas
  4. 1.5 17 km NNE of Hermleigh, Texas
  5. 2.1 17 km NE of Hermleigh, Texas
  6. 2.2 15 km NE of Hermleigh, Texas
  7. 1.6 15 km NE of Hermleigh, Texas
  8. 2.3 15 km NNW of Snyder, Texas
  9. 1.8 18 km NE of Hermleigh, Texas
  10. 1.5 16 km NNE of Hermleigh, Texas
  11. 1.5 17 km NE of Hermleigh, Texas
  12. 2.8 16 km SW of Rotan, Texas
  13. 1.9 17 km NNE of Hermleigh, Texas
  14. 1.5 15 km NNE of Hermleigh, Texas
  15. 3.6 16 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.1 on 2024-07-26 — it released about 89,000 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.