QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

13 km N of Three Rivers, Texas

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

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Live Oak County 26 kmBee County 45 kmMcMullen County 46 kmKarnes County 47 kmAtascosa County 50 kmWilson County 66 kmGoliad County 72 kmSan Patricio County 90 kmJim Wells County 95 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 (ml)
Depth
6.3 km below the surface
Felt
no reports yet
Nearest
Live Oak County, 26 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.

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 28.5810, -98.1640. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Live Oak County, TX 26 km (16 mi) N of here earthquakes near Live Oak County
Bee County, TX 45 km (28 mi) WNW of here earthquakes near Bee County
McMullen County, TX 46 km (29 mi) ENE of here earthquakes near McMullen County
Karnes County, TX 47 km (30 mi) SW of here earthquakes near Karnes County
Atascosa County, TX 50 km (31 mi) SE of here earthquakes near Atascosa County
Wilson County, TX 66 km (41 mi) S of here earthquakes near Wilson County

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

Aftershocks so far

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

  1. 2.1 11 km N of Three Rivers, Texas
  2. 2.0 6 km SE of Three Rivers, Texas
  3. 2.2 12 km NNE of Three Rivers, Texas
  4. 1.5 13 km W of Pawnee, Texas
  5. 2.2 14 km NNE of Three Rivers, Texas
  6. 1.9 11 km N of Three Rivers, Texas
  7. 2.0 9 km NNE of Three Rivers, Texas
  8. 2.3 8 km N of Three Rivers, Texas
  9. 1.9 9 km N of Three Rivers, Texas
  10. 1.5 3 km ESE of Falls City, Texas
  11. 1.9 4 km ESE of Falls City, Texas
  12. 1.7 1 km NNW of Falls City, Texas
  13. 1.8 4 km SE of Falls City, Texas
  14. 1.9 2 km E of Falls City, Texas
  15. 1.8 4 km SE of Falls City, 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 4.0 on 2018-05-01 — it released about 22 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.