QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

10 km W of Sayre, Oklahoma

· 28 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Beckham County 6 kmGreer County 42 kmWheeler County 47 kmRoger Mills County 48 kmCollingsworth County 58 kmHarmon County 59 kmWashita County 69 kmHemphill County 77 kmCuster County 80 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 2.4 (ml)
Depth
28 km below the surface
Felt
no reports yet
Nearest
Beckham County, 6 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 269 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 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 120,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 86,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.7× the energy of this one
  4. This earthquake M 2.4 about 120 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 35.2742, -99.7533. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Beckham County, OK 6 km (4 mi) W of here earthquakes near Beckham County
Greer County, OK 42 km (26 mi) NNW of here earthquakes near Greer County
Wheeler County, TX 47 km (29 mi) ESE of here earthquakes near Wheeler County
Roger Mills County, OK 48 km (30 mi) S of here earthquakes near Roger Mills County
Collingsworth County, TX 58 km (36 mi) NE of here earthquakes near Collingsworth County
Harmon County, OK 59 km (37 mi) N of here earthquakes near Harmon 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. 1.5 16 km SSW of Sayre, Oklahoma
  2. 1.6 6 km S of Carter, 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.