QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Poth, TX

Yes: an earthquake was likely felt in Poth in the last 24 hours. M 3.1, 86 km (54 mi) WSW of Poth, at 3:20 am CST on 12 November 2026 (09:20 UTC); the estimated shaking in Poth was intensity II (weak). Every earthquake near Poth

This page: a magnitude 1.6 earthquake was recorded 6 km (4 mi) south-southwest of Poth, TX, at 4:02 pm CST on 9 January 2023 (22:02 UTC), 7.6 km deep.

USGS: 5 km SSW of Poth, Texas

65 km (40 mi) SE of San Antonio, TX

4:02 pm CST, Jan 9, 2023 · · 7.6 km deep · released about 7.6 lb of TNT

10 km30 km60 km120 km N Wilson County 17 kmKarnes County 26 kmAtascosa County 45 kmBexar County 63 kmGuadalupe County 64 kmDeWitt County 72 kmLive Oak County 74 kmBee County 75 kmGoliad County 76 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
4:02 pm CST on 9 January 2023 ()
Where
6 km (4 mi) south-southwest of Poth, TX · earthquakes near Poth
Texas today
every earthquake in Texas in the last 24 hours
Magnitude
M 1.6 (ml)
Depth
7.6 km below the surface
Felt
no reports yet
Nearest
Wilson County, 17 km N
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 1 km (1 mi) from the epicentre. In Poth, 6 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.

Earthquakes near other towns within 30 km: Floresville, Karnes City, Stockdale.

How big was it?

This earthquake released about 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 4.0 on 2018-05-01 — about 4,000 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 29.0180, -98.0940. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Wilson County, TX 17 km (11 mi) N earthquakes near Wilson County
Karnes County, TX 26 km (16 mi) ESE earthquakes near Karnes County
Atascosa County, TX 45 km (28 mi) WSW earthquakes near Atascosa County
Bexar County, TX 63 km (39 mi) NW earthquakes near Bexar County
Guadalupe County, TX 64 km (40 mi) NNE earthquakes near Guadalupe County
DeWitt County, TX 72 km (44 mi) E earthquakes near DeWitt 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 20 km ENE of Falls City, Texas
  2. 2.6 23 km SE of Christine, Texas
  3. 1.9 22 km NNW of Three Rivers, Texas
  4. 1.9 23 km NNW of Three Rivers, Texas
  5. 2.8 23 km NNW of Three Rivers, Texas
  6. 2.0 22 km NNW of Three Rivers, Texas
  7. 1.7 9 km ENE of Christine, Texas
  8. 2.0 22 km NNW of Three Rivers, Texas
  9. 1.5 23 km NNW of Three Rivers, Texas
  10. 1.5 22 km NNW of Three Rivers, Texas
  11. 1.7 20 km ENE of Falls City, Texas
  12. 1.8 18 km ENE of Falls City, Texas
  13. 1.7 19 km ENE of Falls City, Texas
  14. 1.6 22 km NNW of Three Rivers, Texas
  15. 1.6 22 km NNW of Three Rivers, 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.