QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5ml

21 km E of Smiley, Texas

· 6.0 km deep · released about 2.7 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N DeWitt County 21 kmGonzales County 24 kmKarnes County 52 kmLavaca County 56 kmGuadalupe County 60 kmWilson County 60 kmGoliad County 65 kmCaldwell County 67 kmVictoria County 70 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 3.5 (ml)
Depth
6.0 km below the surface
Felt
7 reports · strongest reported intensity III
Nearest
DeWitt County, 21 km SSE
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. 7 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 63,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,000× the energy of this one
  4. This earthquake M 3.5 about 2.7 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 5.6× 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 29.2430, -97.4740. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
DeWitt County, TX 21 km (13 mi) NNW of here earthquakes near DeWitt County
Gonzales County, TX 24 km (15 mi) S of here earthquakes near Gonzales County
Karnes County, TX 52 km (32 mi) NE of here earthquakes near Karnes County
Lavaca County, TX 56 km (35 mi) WSW of here earthquakes near Lavaca County
Guadalupe County, TX 60 km (37 mi) SE of here earthquakes near Guadalupe County
Wilson County, TX 60 km (37 mi) E of here earthquakes near Wilson County

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

Aftershocks so far

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

  1. 2.7 17 km S of Nixon, Texas
  2. 2.2 17 km S of Nixon, Texas
  3. 2.0 17 km S of Nixon, Texas
  4. 1.8 18 km S of Nixon, Texas
  5. 1.7 19 km S of Nixon, Texas
  6. 2.4 17 km S of Nixon, Texas
  7. 1.7 18 km S of Nixon, Texas
  8. 1.7 17 km S of Nixon, Texas
  9. 1.6 17 km S of Nixon, Texas
  10. 1.8 18 km S of Nixon, Texas
  11. 1.6 17 km S of Nixon, Texas
  12. 1.9 18 km S of Nixon, Texas
  13. 2.4 20 km ENE of Falls City, Texas
  14. 1.7 10 km SE of Smiley, Texas
  15. 1.7 20 km ENE 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.

On USGS

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