QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

9 km S of Jacksboro, Texas

· 3.2 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jack County 12 kmPalo Pinto County 45 kmWise County 47 kmYoung County 50 kmParker County 50 kmMontague County 72 kmClay County 73 kmArcher County 74 kmStephens County 78 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 1.8 (ml)
Depth
3.2 km below the surface
Felt
no reports yet
Nearest
Jack County, 12 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1027 days ago

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

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.

Where

Epicentre 33.1300, -98.1450. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jack County, TX 12 km (7 mi) SSE of here earthquakes near Jack County
Palo Pinto County, TX 45 km (28 mi) NNE of here earthquakes near Palo Pinto County
Wise County, TX 47 km (29 mi) WSW of here earthquakes near Wise County
Young County, TX 50 km (31 mi) E of here earthquakes near Young County
Parker County, TX 50 km (31 mi) NW of here earthquakes near Parker County
Montague County, TX 72 km (45 mi) SSW of here earthquakes near Montague County

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

Aftershocks so far

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

  1. 1.8 4 km SSE of Chico, Texas
  2. 2.7 13 km ESE of Olney, 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.