QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

11 km N of Tilden, Texas

· 3.2 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N McMullen County 20 kmAtascosa County 37 kmLive Oak County 48 kmLa Salle County 58 kmFrio County 64 kmKarnes County 79 kmBee County 81 kmWilson County 82 kmDuval County 98 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 2.5 (ml)
Depth
3.2 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
McMullen County, 20 km S
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. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 28.5610, -98.5580. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
McMullen County, TX 20 km (12 mi) N of here earthquakes near McMullen County
Atascosa County, TX 37 km (23 mi) S of here earthquakes near Atascosa County
Live Oak County, TX 48 km (30 mi) WNW of here earthquakes near Live Oak County
La Salle County, TX 58 km (36 mi) ENE of here earthquakes near La Salle County
Frio County, TX 64 km (40 mi) ESE of here earthquakes near Frio County
Karnes County, TX 79 km (49 mi) WSW of here earthquakes near Karnes County

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

Aftershocks so far

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

  1. 1.5 22 km NE of Tilden, Texas
  2. 1.7 15 km NW of Fowlerton, Texas
  3. 1.5 21 km SSE of Christine, Texas
  4. 1.6 16 km N of Fowlerton, Texas
  5. 1.5 14 km NNW of Fowlerton, Texas
  6. 1.7 17 km NW of Fowlerton, Texas
  7. 1.6 16 km NW of Fowlerton, Texas
  8. 1.8 23 km NNW of Fowlerton, Texas
  9. 1.7 22 km E of Dilley, Texas
  10. 1.7 15 km NNW of Fowlerton, Texas
  11. 2.2 22 km E of Dilley, Texas
  12. 1.8 22 km E of Dilley, Texas
  13. 1.7 7 km NNW of Tilden, Texas
  14. 1.9 10 km N of Tilden, Texas
  15. 1.9 7 km NNW of Tilden, 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.