QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

Earthquake near Three Rivers, TX

No earthquake was likely felt in Three Rivers in the 24 hours to 2:03 am CST (08:03 UTC). The last one was M 3.2, 50 km (31 mi) NNW, at 1:55 am CDT on 20 October 2026, estimated intensity III (weak) in town. Every earthquake near Three Rivers

This page: a magnitude 2.6 earthquake was recorded 9 km (6 mi) north of Three Rivers, TX, at 11:52 pm CDT on 4 October 2022 (04:52 UTC), 5.2 km deep.

USGS: 8 km N of Three Rivers, Texas

11:52 pm CDT, Oct 4, 2022 · · 5.2 km deep · released about 240 lb of TNT

10 km30 km60 km120 km N Live Oak County 22 kmMcMullen County 42 kmBee County 45 kmAtascosa County 52 kmKarnes County 52 kmWilson County 71 kmGoliad County 75 kmSan Patricio County 88 kmJim Wells County 90 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
11:52 pm CDT on 4 October 2022 ()
Where
9 km (6 mi) north of Three Rivers, TX · earthquakes near Three Rivers
Texas today
every earthquake in Texas in the last 24 hours
Magnitude
M 2.6 (ml)
Depth
5.2 km below the surface
Felt
no reports yet
Nearest
Live Oak County, 22 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 498 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 51 km (32 mi) from the epicentre. In Three Rivers, 9 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: Three Rivers 9 km, intensity III · Karnes City 47 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 130 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 28.5400, -98.1850. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Live Oak County, TX 22 km (13 mi) SSE earthquakes near Live Oak County
McMullen County, TX 42 km (26 mi) WSW earthquakes near McMullen County
Bee County, TX 45 km (28 mi) ESE earthquakes near Bee County
Atascosa County, TX 52 km (32 mi) NW earthquakes near Atascosa County
Karnes County, TX 52 km (33 mi) NE earthquakes near Karnes County
Wilson County, TX 71 km (44 mi) N earthquakes near Wilson County

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

Aftershocks so far

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

  1. 1.9 4 km SSW of Falls City, Texas
  2. 2.1 3 km SSW of Falls City, Texas
  3. 2.0 3 km SSW of Falls City, Texas
  4. 1.9 4 km SSW of Falls City, Texas
  5. 1.9 4 km S of Falls City, Texas
  6. 2.2 19 km WNW of Pawnee, Texas
  7. 2.7 19 km WNW of Pawnee, Texas
  8. 1.8 3 km SW of Falls City, Texas
  9. 1.5 4 km SW of Falls City, Texas
  10. 1.7 18 km WNW of Pawnee, Texas
  11. 1.6 18 km WNW of Pawnee, Texas
  12. 1.5 18 km W of Pawnee, Texas
  13. 1.8 17 km W of Pawnee, Texas
  14. 1.5 18 km WNW of Pawnee, Texas
  15. 2.0 18 km WNW 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.