QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

11 km S of Smiley, Texas

· 5.5 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N DeWitt County 27 kmGonzales County 35 kmKarnes County 36 kmWilson County 45 kmGuadalupe County 56 kmGoliad County 59 kmLavaca County 72 kmCaldwell County 74 kmVictoria County 75 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 2.9 (ml)
Depth
5.5 km below the surface
Felt
5 reports · strongest reported intensity IV
Nearest
DeWitt County, 27 km ESE
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. 5 people have reported feeling it to USGS.

How big was it?

This earthquake released about 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 29.1640, -97.6210. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
DeWitt County, TX 27 km (17 mi) WNW of here earthquakes near DeWitt County
Gonzales County, TX 35 km (22 mi) SSW of here earthquakes near Gonzales County
Karnes County, TX 36 km (22 mi) NE of here earthquakes near Karnes County
Wilson County, TX 45 km (28 mi) E of here earthquakes near Wilson County
Guadalupe County, TX 56 km (35 mi) SE of here earthquakes near Guadalupe County
Goliad County, TX 59 km (37 mi) NNW of here earthquakes near Goliad 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. 1.6 11 km N of Nordheim, Texas
  2. 1.8 8 km N of Nordheim, Texas
  3. 1.6 8 km N of Nordheim, Texas
  4. 1.6 6 km N of Nordheim, Texas
  5. 1.8 7 km N of Nordheim, Texas
  6. 1.5 6 km N of Nordheim, Texas
  7. 1.5 9 km N of Nordheim, Texas
  8. 1.5 8 km N of Nordheim, Texas
  9. 1.5 9 km N of Nordheim, Texas
  10. 2.6 3 km W of Falls City, Texas
  11. 1.7 3 km WSW of Falls City, Texas
  12. 2.2 9 km SE of Smiley, Texas
  13. 2.1 2 km SE of Falls City, Texas
  14. 1.9 19 km ENE of Falls City, Texas
  15. 1.8 6 km NNW of Nordheim, 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 45 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.