QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

18 km WNW of Sanford, Texas

· 2.5 km deep · released about 85 lb of TNT

10 km30 km60 km120 km N Moore County 17 kmHutchinson County 32 kmPotter County 46 kmCarson County 53 kmSherman County 57 kmHansford County 63 kmRoberts County 79 kmHartley County 81 kmOldham 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
Magnitude
M 2.3 (ml)
Depth
2.5 km below the surface
Felt
no reports yet
Nearest
Moore County, 17 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1206 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 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 35.7834, -101.7154. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Moore County, TX 17 km (10 mi) ESE of here earthquakes near Moore County
Hutchinson County, TX 32 km (20 mi) W of here earthquakes near Hutchinson County
Potter County, TX 46 km (28 mi) NNE of here earthquakes near Potter County
Carson County, TX 53 km (33 mi) NW of here earthquakes near Carson County
Sherman County, TX 57 km (36 mi) SSE of here earthquakes near Sherman County
Hansford County, TX 63 km (39 mi) SSW of here earthquakes near Hansford County

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

Aftershocks so far

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

  1. 2.0 14 km SE of Morse, Texas
  2. 2.2 11 km WNW of Fritch, Texas
  3. 2.0 18 km E of Boys Ranch, Texas
  4. 1.6 17 km NNE of Amarillo, Texas
  5. 2.2 8 km E of Cactus, Texas
  6. 2.2 16 km N of Bishop Hills, Texas
  7. 2.3 15 km ESE of Stinnett, 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.