QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5ml

15 km NW of Okarche, Oklahoma

· 6.3 km deep · released about 2.5 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kingfisher County 20 kmBlaine County 30 kmCanadian County 33 kmLogan County 59 kmMajor County 68 kmGarfield County 68 kmOklahoma County 69 kmCaddo County 77 kmCuster County 84 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 3.5 (ml)
Depth
6.3 km below the surface
Felt
11 reports · strongest reported intensity III
Measured shaking
intensity IV (ShakeMap)
Nearest
Kingfisher County, 20 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2417 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 11 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2.5 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 68,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,100× the energy of this one
  4. This earthquake M 3.5 about 2.5 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 5.2× 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 35.8237, -98.0975. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kingfisher County, OK 20 km (13 mi) SW of here earthquakes near Kingfisher County
Blaine County, OK 30 km (19 mi) ESE of here earthquakes near Blaine County
Canadian County, OK 33 km (20 mi) NNW of here earthquakes near Canadian County
Logan County, OK 59 km (37 mi) W of here earthquakes near Logan County
Major County, OK 68 km (42 mi) SE of here earthquakes near Major County
Garfield County, OK 68 km (42 mi) SSW of here earthquakes near Garfield County

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

Aftershocks so far

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

  1. 2.0 2 km ENE of Hennessey, Oklahoma
  2. 1.6 11 km S of Ames, Oklahoma
  3. 1.7 8 km WNW of Greenfield, Oklahoma
  4. 1.5 7 km SW of Kingfisher, Oklahoma
  5. 2.0 Oklahoma
  6. 1.7 7 km S of Cedar Valley, Oklahoma
  7. 2.1 7 km S of Cedar Valley, Oklahoma
  8. 1.9 11 km NW of Watonga, Oklahoma
  9. 1.9 13 km WNW of Watonga, Oklahoma
  10. 1.8 11 km WNW of Watonga, Oklahoma
  11. 3.4 12 km NW of Watonga, Oklahoma
  12. 1.6 13 km W of Kingfisher, Oklahoma
  13. 2.0 13 km W of Kingfisher, Oklahoma
  14. 1.7 5 km SW of Okarche, Oklahoma
  15. 2.0 6 km NNE of Loyal, 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.