QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

Earthquake near Big Spring, TX

Yes: an earthquake was likely felt in Big Spring in the last 24 hours. M 2.5, 41 km (26 mi) ESE of Big Spring, at 5:05 pm CST on 11 November 2026 (23:05 UTC); the estimated shaking in Big Spring was intensity II (weak). Every earthquake near Big Spring

This page: a magnitude 2.7 earthquake was recorded 21 km (13 mi) northwest of Big Spring, TX, at 9:25 pm CDT on 25 June 2021 (02:25 UTC), 10 km deep.

USGS: 17 km SSE of Ackerly, Texas

60 km (37 mi) NE of Midland, TX

9:25 pm CDT, Jun 25, 2021 · · 10 km deep · released about 340 lb of TNT

10 km30 km60 km120 km N Howard County 20 kmMartin County 32 kmBorden County 43 kmDawson County 50 kmGlasscock County 58 kmMitchell County 67 kmMidland County 72 kmScurry County 78 kmSterling County 82 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
9:25 pm CDT on 25 June 2021 ()
Where
21 km (13 mi) northwest of Big Spring, TX · earthquakes near Big Spring
Texas today
every earthquake in Texas in the last 24 hours
Magnitude
M 2.7 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Howard County, 20 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1890 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 55 km (34 mi) from the epicentre. In Big Spring, 21 km away, the estimate is intensity III (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: Big Spring 21 km, intensity III · Stanton 32 km, intensity II · Lamesa 49 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 2020-12-31 — about 89 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 32.3831, -101.6326. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Howard County, TX 20 km (13 mi) ESE earthquakes near Howard County
Martin County, TX 32 km (20 mi) WSW earthquakes near Martin County
Borden County, TX 43 km (27 mi) NNE earthquakes near Borden County
Dawson County, TX 50 km (31 mi) NW earthquakes near Dawson County
Glasscock County, TX 58 km (36 mi) S earthquakes near Glasscock County
Mitchell County, TX 67 km (42 mi) E earthquakes near Mitchell County

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

Aftershocks so far

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

  1. 2.3 37 km SSW of Los Ybanez, Texas
  2. 3.3 12 km S of Ackerly, Texas
  3. 2.1 western Texas
  4. 2.1 16 km WNW of Big Spring, Texas
  5. 1.9 6 km SE of Ackerly, Texas
  6. 1.9 6 km SE of Ackerly, Texas
  7. 2.3 38 km ENE of McKinney Acres, Texas
  8. 2.3 17 km N of Stanton, Texas
  9. 1.6 13 km SSE of Ackerly, Texas
  10. 2.0 34 km WSW of Ackerly, Texas
  11. 1.7 38 km ENE of McKinney Acres, Texas
  12. 1.6 18 km SSE of Ackerly, Texas
  13. 1.7 18 km SSE of Ackerly, Texas
  14. 1.5 36 km WSW of Ackerly, Texas
  15. 2.8 38 km ENE of McKinney Acres, 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.