QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

Earthquake near Three Rivers, TX

Yes: an earthquake was likely felt in Three Rivers in the last 24 hours. M 3.2, 87 km (54 mi) WNW of Three Rivers, at 3:20 am CST on 12 November 2026 (09:20 UTC); the estimated shaking in Three Rivers was intensity II (weak). Every earthquake near Three Rivers

This page: a magnitude 1.5 earthquake was recorded 22 km (14 mi) north-northwest of Three Rivers, TX, at 10:26 pm CDT on 22 March 2023 (03:26 UTC), 8.7 km deep.

USGS: 22 km NNW of Three Rivers, Texas

94 km (58 mi) SSE of San Antonio, TX

10:26 pm CDT, Mar 22, 2023 · · 8.7 km deep · released about 5.4 lb of TNT

10 km30 km60 km120 km N Live Oak County 36 kmAtascosa County 38 kmMcMullen County 42 kmKarnes County 50 kmBee County 57 kmWilson County 61 kmGoliad County 82 kmFrio County 86 kmLa Salle County 88 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
10:26 pm CDT on 22 March 2023 ()
Where
22 km (14 mi) north-northwest of Three Rivers, TX · earthquakes near Three Rivers
Texas today
every earthquake in Texas in the last 24 hours
Magnitude
M 1.5 (ml)
Depth
8.7 km below the surface
Felt
no reports yet
Nearest
Live Oak County, 36 km SSE
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 it was probably too small to be felt, even directly above it. In Three Rivers, 22 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.

How big was it?

This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 5,600 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 28.6480, -98.2670. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Live Oak County, TX 36 km (22 mi) SSE earthquakes near Live Oak County
Atascosa County, TX 38 km (23 mi) NW earthquakes near Atascosa County
McMullen County, TX 42 km (26 mi) SW earthquakes near McMullen County
Karnes County, TX 50 km (31 mi) NE earthquakes near Karnes County
Bee County, TX 57 km (36 mi) ESE earthquakes near Bee County
Wilson County, TX 61 km (38 mi) NNE earthquakes near Wilson County

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

Aftershocks so far

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

  1. 1.6 23 km NNW of Three Rivers, Texas
  2. 1.5 23 km NNW of Three Rivers, Texas
  3. 2.1 22 km NNW of Three Rivers, Texas
  4. 2.0 23 km NNW of Three Rivers, Texas
  5. 1.9 23 km NNW of Three Rivers, Texas
  6. 2.0 23 km NNW of Three Rivers, Texas
  7. 2.6 23 km NNW of Three Rivers, Texas
  8. 1.6 22 km NW of Three Rivers, Texas
  9. 1.9 21 km W of Pawnee, Texas
  10. 1.9 24 km W of Pawnee, Texas
  11. 1.6 25 km ESE of Christine, Texas
  12. 1.7 23 km W of Pawnee, Texas
  13. 1.7 24 km W of Pawnee, Texas
  14. 1.5 23 km W of Pawnee, Texas
  15. 1.8 22 km W 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.