QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

15 km S of Smiley, Texas

· 6.8 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N DeWitt County 29 kmKarnes County 31 kmGonzales County 40 kmWilson County 42 kmGoliad County 56 kmGuadalupe County 58 kmVictoria County 76 kmLavaca County 77 kmCaldwell County 78 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 1.9 (ml)
Depth
6.8 km below the surface
Felt
no reports yet
Nearest
DeWitt County, 29 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 452 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 29.1270, -97.6560. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
DeWitt County, TX 29 km (18 mi) W of here earthquakes near DeWitt County
Karnes County, TX 31 km (19 mi) NE of here earthquakes near Karnes County
Gonzales County, TX 40 km (25 mi) SSW of here earthquakes near Gonzales County
Wilson County, TX 42 km (26 mi) E of here earthquakes near Wilson County
Goliad County, TX 56 km (35 mi) NNW of here earthquakes near Goliad County
Guadalupe County, TX 58 km (36 mi) SSE of here earthquakes near Guadalupe County

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

Aftershocks so far

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

  1. 2.4 3 km NNW of Nordheim, Texas
  2. 2.9 3 km NNW of Nordheim, Texas
  3. 1.6 2 km NW of Nordheim, Texas
  4. 2.3 0 km SE of Nordheim, Texas
  5. 1.8 3 km NNW of Nordheim, Texas
  6. 1.8 2 km NW of Nordheim, Texas
  7. 1.8 3 km NW of Nordheim, Texas
  8. 1.6 20 km ENE of Falls City, Texas
  9. 1.7 3 km NW of Nordheim, Texas
  10. 1.5 2 km NW of Nordheim, Texas
  11. 1.5 6 km N of Runge, Texas
  12. 2.2 14 km ENE of Smiley, Texas
  13. 1.6 12 km E of Smiley, Texas
  14. 1.6 11 km E of Smiley, Texas
  15. 1.8 11 km E of Smiley, 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 1,400 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.