QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Karnes City, TX

Yes: an earthquake was likely felt in Karnes City in the last 24 hours. M 3.2, 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). Every earthquake near Karnes City

This page: a magnitude 1.8 earthquake was recorded 14 km (9 mi) northwest of Karnes City, TX, at 2:13 pm CDT on 27 March 2024 (19:13 UTC), 6.8 km deep.

USGS: 2 km E of Falls City, Texas

74 km (46 mi) SE of San Antonio, TX

2:13 pm CDT, Mar 27, 2024 · · 6.8 km deep · released about 15 lb of TNT

10 km30 km60 km120 km N Karnes County 16 kmWilson County 23 kmAtascosa County 54 kmDeWitt County 62 kmGoliad County 65 kmGuadalupe County 67 kmBee County 68 kmGonzales County 72 kmLive Oak County 72 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
2:13 pm CDT on 27 March 2024 ()
Where
14 km (9 mi) northwest of Karnes City, TX · earthquakes near Karnes City
Texas today
every earthquake in Texas in the last 24 hours
Magnitude
M 1.8 (ml)
Depth
6.8 km below the surface
Felt
no reports yet
Nearest
Karnes County, 16 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 498 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 15 km (9 mi) from the epicentre. In Karnes City, 14 km away, the estimate is intensity II (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 14 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 4.5 on 2024-02-17 — about 11,000 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 28.9850, -97.9880. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Karnes County, TX 16 km (10 mi) ESE earthquakes near Karnes County
Wilson County, TX 23 km (14 mi) NNW earthquakes near Wilson County
Atascosa County, TX 54 km (34 mi) W earthquakes near Atascosa County
DeWitt County, TX 62 km (38 mi) E earthquakes near DeWitt County
Goliad County, TX 65 km (41 mi) ESE earthquakes near Goliad County
Guadalupe County, TX 67 km (41 mi) N earthquakes near Guadalupe County

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

Aftershocks so far

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

  1. 2.5 3 km E of Falls City, Texas
  2. 1.6 3 km E of Falls City, Texas
  3. 2.4 3 km E of Falls City, Texas
  4. 1.7 3 km E of Falls City, Texas
  5. 2.0 3 km E of Falls City, Texas
  6. 2.2 2 km ESE of Falls City, Texas
  7. 1.6 3 km NE of Falls City, Texas
  8. 3.5 2 km E of Falls City, Texas
  9. 1.8 3 km SSW of Falls City, Texas
  10. 2.3 3 km ESE of Falls City, Texas
  11. 2.6 3 km E of Falls City, Texas
  12. 2.8 27 km SW of Falls City, Texas
  13. 1.6 26 km NW of Pawnee, Texas
  14. 1.5 27 km E of Christine, Texas
  15. 1.9 26 km NW of Pawnee, 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.