QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8mb_lg

1 km NW of Pottsboro, Texas

· 5.0 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grayson County 16 kmMarshall County 30 kmBryan County 44 kmCooke County 51 kmLove County 56 kmFannin County 57 kmJohnston County 61 kmCollin County 65 kmDenton 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
Magnitude
M 2.8 (mb_lg)
Depth
5.0 km below the surface
Felt
16 reports · strongest reported intensity IV
Nearest
Grayson County, 16 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2574 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 16 people have reported feeling it to USGS.

How big was it?

This earthquake released about 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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.

Where

Epicentre 33.7700, -96.6865. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grayson County, TX 16 km (10 mi) N of here earthquakes near Grayson County
Marshall County, OK 30 km (18 mi) SSE of here earthquakes near Marshall County
Bryan County, OK 44 km (28 mi) WSW of here earthquakes near Bryan County
Cooke County, TX 51 km (31 mi) ENE of here earthquakes near Cooke County
Love County, OK 56 km (35 mi) ESE of here earthquakes near Love County
Fannin County, TX 57 km (36 mi) WNW of here earthquakes near Fannin County

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

Aftershocks so far

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

  1. 1.5 6 km SSE of Tishomingo, Oklahoma
  2. 1.5 4 km W of Durant, Oklahoma
  3. 1.6 2 km NNW of Durant, Oklahoma
  4. 1.7 1 km WSW of Durant, Oklahoma
  5. 2.0 2 km SW of Durant, Oklahoma
  6. 2.4 4 km WSW of Durant, Oklahoma
  7. 1.7 3 km SW of Armstrong, Oklahoma
  8. 1.7 3 km SW of Armstrong, Oklahoma
  9. 2.1 0 km SW of Durant, Oklahoma
  10. 2.3 6 km SSE of Tishomingo, Oklahoma
  11. 1.9 6 km SSE of Tishomingo, Oklahoma
  12. 1.7 5 km S of Tishomingo, Oklahoma
  13. 1.7 5 km SSW of Tishomingo, Oklahoma
  14. 1.7 3 km S of Tishomingo, Oklahoma
  15. 1.6 7 km S of Tishomingo, Oklahoma

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.