QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

33 km WSW of Ackerly, Texas

· 9.4 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Martin County 17 kmDawson County 35 kmAndrews County 57 kmHoward County 60 kmGaines County 63 kmBorden County 67 kmMidland County 70 kmEctor County 79 kmGlasscock County 81 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 1.9 (ml)
Depth
9.4 km below the surface
Felt
no reports yet
Nearest
Martin County, 17 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 734 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 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 32.4420, -102.0570. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Martin County, TX 17 km (11 mi) NNW of here earthquakes near Martin County
Dawson County, TX 35 km (22 mi) SSW of here earthquakes near Dawson County
Andrews County, TX 57 km (35 mi) ENE of here earthquakes near Andrews County
Howard County, TX 60 km (37 mi) WNW of here earthquakes near Howard County
Gaines County, TX 63 km (39 mi) ESE of here earthquakes near Gaines County
Borden County, TX 67 km (41 mi) WSW of here earthquakes near Borden County

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

Aftershocks so far

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

  1. 2.0 32 km SSW of Los Ybanez, Texas
  2. 2.2 16 km NW of Stanton, Texas
  3. 3.0 21 km NNW of Stanton, Texas
  4. 1.6 35 km WSW of Ackerly, Texas
  5. 1.9 9 km SSE of Ackerly, Texas
  6. 1.8 35 km WSW of Ackerly, Texas
  7. 1.8 33 km WSW of Ackerly, Texas
  8. 1.5 36 km WSW of Ackerly, Texas
  9. 2.1 35 km WSW of Ackerly, Texas
  10. 1.7 20 km NW of Stanton, Texas
  11. 1.8 34 km WSW of Ackerly, Texas
  12. 2.0 35 km WSW of Ackerly, Texas
  13. 1.9 34 km WSW of Ackerly, Texas
  14. 1.6 35 km WSW of Ackerly, Texas
  15. 3.1 34 km WSW of Ackerly, 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 5.2 on 2022-12-16 — 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.