QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

18 km SSW of Charlotte, Texas

· 4.3 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Atascosa County 33 kmFrio County 33 kmMcMullen County 44 kmLa Salle County 50 kmMedina County 76 kmLive Oak County 79 kmBexar County 86 kmWilson County 87 kmZavala County 94 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 2.6 (ml)
Depth
4.3 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Atascosa County, 33 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 452 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 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 28.7210, -98.8130. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Atascosa County, TX 33 km (21 mi) SW of here earthquakes near Atascosa County
Frio County, TX 33 km (21 mi) ESE of here earthquakes near Frio County
McMullen County, TX 44 km (27 mi) NNW of here earthquakes near McMullen County
La Salle County, TX 50 km (31 mi) NE of here earthquakes near La Salle County
Medina County, TX 76 km (47 mi) SSE of here earthquakes near Medina County
Live Oak County, TX 79 km (49 mi) WNW of here earthquakes near Live Oak 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. 1.7 17 km ESE of Pearsall, Texas
  2. 1.8 11 km E of Pearsall, Texas
  3. 1.7 19 km WSW of Charlotte, Texas
  4. 1.8 14 km E of Pearsall, Texas
  5. 2.0 14 km E of Pearsall, Texas
  6. 1.8 11 km ESE of Pearsall, Texas
  7. 1.9 18 km E of Pearsall, Texas
  8. 2.0 18 km SW of Charlotte, Texas
  9. 2.8 17 km SW of Charlotte, Texas
  10. 1.7 16 km ENE of Hilltop, Texas
  11. 1.8 20 km SE of Pearsall, Texas
  12. 1.8 21 km E of Hilltop, Texas
  13. 2.3 12 km E of Dilley, Texas
  14. 1.8 5 km SE of Dilley, Texas
  15. 1.8 8 km ESE of Dilley, 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.