QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1mb_lg

2 km SW of Christine, Texas

· 8.4 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Atascosa County 13 kmMcMullen County 43 kmFrio County 59 kmLive Oak County 60 kmWilson County 61 kmKarnes County 66 kmLa Salle County 73 kmBexar County 75 kmBee County 85 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 3.1 (mb_lg)
Depth
8.4 km below the surface
Felt
10 reports · strongest reported intensity III
Nearest
Atascosa County, 13 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 453 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 10 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 250,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 11,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,900× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× more

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 28.7714, -98.5161. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Atascosa County, TX 13 km (8 mi) S of here earthquakes near Atascosa County
McMullen County, TX 43 km (27 mi) N of here earthquakes near McMullen County
Frio County, TX 59 km (37 mi) E of here earthquakes near Frio County
Live Oak County, TX 60 km (37 mi) NW of here earthquakes near Live Oak County
Wilson County, TX 61 km (38 mi) SW of here earthquakes near Wilson County
Karnes County, TX 66 km (41 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

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

  1. 2.0 6 km ENE of Charlotte, Texas
  2. 2.5 11 km N of Three Rivers, Texas
  3. 1.6 18 km W of Pawnee, Texas
  4. 1.8 16 km N of Three Rivers, Texas
  5. 1.9 10 km NNE of Three Rivers, Texas
  6. 1.7 11 km NNE of Three Rivers, Texas
  7. 1.9 12 km NNE of Three Rivers, Texas
  8. 2.0 14 km N of Three Rivers, Texas
  9. 1.8 12 km N of Three Rivers, Texas
  10. 2.0 14 km N of Three Rivers, Texas
  11. 1.9 12 km N of Three Rivers, Texas
  12. 2.2 8 km NNE of Three Rivers, Texas
  13. 2.3 10 km N of Three Rivers, Texas
  14. 2.2 14 km N of Three Rivers, Texas
  15. 2.6 12 km NW of Three Rivers, 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.