QuakeIndex

Earthquake · reviewed by a seismologist

M 4.0mwr

3 km WNW of Shattuck, Oklahoma

· 7.7 km deep · released about 18 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ellis County 16 kmLipscomb County 32 kmWoodward County 59 kmHarper County 61 kmHemphill County 62 kmRoger Mills County 66 kmBeaver County 72 kmOchiltree County 81 kmDewey County 88 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 4.0 (mwr)
Depth
7.7 km below the surface
Felt
108 reports · strongest reported intensity V
Measured shaking
intensity V (ShakeMap)
Nearest
Ellis County, 16 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1884 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 108 people have reported feeling it to USGS.

How big was it?

This earthquake released about 18 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 9,400× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 420× the energy of this one
  3. Magna, Utah 2020 M 5.7 300× the energy of this one
  4. This earthquake M 4.0 about 18 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 38× more

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 36.2862, -99.9147. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ellis County, OK 16 km (10 mi) WNW of here earthquakes near Ellis County
Lipscomb County, TX 32 km (20 mi) E of here earthquakes near Lipscomb County
Woodward County, OK 59 km (37 mi) WSW of here earthquakes near Woodward County
Harper County, OK 61 km (38 mi) SSW of here earthquakes near Harper County
Hemphill County, TX 62 km (38 mi) NNE of here earthquakes near Hemphill County
Roger Mills County, OK 66 km (41 mi) NNW of here earthquakes near Roger Mills County

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

Aftershocks so far

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

  1. 2.0 18 km SW of May, Oklahoma
  2. 2.9 6 km NE of Follett, Texas
  3. 1.6 5 km NW of Fort Supply, Oklahoma
  4. 2.1 12 km SSW of Higgins, Texas
  5. 1.6 5 km NNE of Fort Supply, Oklahoma
  6. 1.6 4 km NW of Shattuck, 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.