QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

Earthquake near Karnes City, TX

Yes: an earthquake was likely felt in Karnes City in the last 24 hours. M 3.1, 101 km (63 mi) W of Karnes City, at 3:20 am CST on 12 November 2026 (09:20 UTC); the estimated shaking in Karnes City was intensity II (weak). 1 person has reported feeling it to USGS. Every earthquake near Karnes City

This page: a magnitude 3.0 earthquake was recorded 16 km (10 mi) west-northwest of Karnes City, TX, at 12:17 pm CDT on 10 October 2023 (17:17 UTC), 7.6 km deep.

USGS: 8 km SSW of Falls City, Texas

75 km (47 mi) SE of San Antonio, TX

12:17 pm CDT, Oct 10, 2023 · · 7.6 km deep · released about 950 lb of TNT

10 km30 km60 km120 km N Karnes County 21 kmWilson County 29 kmAtascosa County 46 kmLive Oak County 63 kmBee County 64 kmGoliad County 68 kmDeWitt County 71 kmBexar County 74 kmGuadalupe 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
12:17 pm CDT on 10 October 2023 ()
Where
16 km (10 mi) west-northwest of Karnes City, TX · earthquakes near Karnes City
Texas today
every earthquake in Texas in the last 24 hours
Magnitude
M 3.0 (ml)
Depth
7.6 km below the surface
Felt
no reports yet
Nearest
Karnes County, 21 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 499 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 73 km (45 mi) from the epicentre. In Karnes City, 16 km away, the estimate is intensity III (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Karnes City 16 km, intensity III · Floresville 26 km, intensity III · Stockdale 37 km, intensity III · Pleasanton 41 km, intensity II · Jourdanton 47 km, intensity II · Nixon 49 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.1 on 2023-09-14 — about 45 times the energy of this one.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 28.9170, -98.0650. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Karnes County, TX 21 km (13 mi) E earthquakes near Karnes County
Wilson County, TX 29 km (18 mi) N earthquakes near Wilson County
Atascosa County, TX 46 km (29 mi) W earthquakes near Atascosa County
Live Oak County, TX 63 km (39 mi) S earthquakes near Live Oak County
Bee County, TX 64 km (40 mi) SSE earthquakes near Bee County
Goliad County, TX 68 km (42 mi) ESE earthquakes near Goliad County

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

Aftershocks so far

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

  1. 1.6 20 km E of Pleasanton, Texas
  2. 1.6 23 km NNW of Three Rivers, Texas
  3. 1.6 21 km NNW of Three Rivers, Texas
  4. 1.6 23 km NNW of Three Rivers, Texas
  5. 1.6 22 km NNW of Three Rivers, Texas
  6. 1.7 22 km NNW of Three Rivers, Texas
  7. 1.7 22 km NNW of Three Rivers, Texas
  8. 1.5 23 km NNW of Three Rivers, Texas
  9. 1.6 7 km SSW of Falls City, Texas
  10. 1.6 18 km WSW of Falls City, Texas
  11. 1.9 14 km ENE of Falls City, Texas
  12. 1.8 13 km ENE of Falls City, Texas
  13. 2.1 15 km WSW of Falls City, Texas
  14. 1.5 18 km WSW of Falls City, Texas
  15. 1.6 18 km WSW 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.