QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

2 km NNE of Calumet, Oklahoma

· 7.5 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Canadian County 14 kmKingfisher County 40 kmBlaine County 41 kmCaddo County 56 kmOklahoma County 64 kmLogan County 68 kmGrady County 70 kmCuster County 80 kmCleveland County 85 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
7.5 km below the surface
Felt
no reports yet
Nearest
Canadian County, 14 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 920 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 35.6193, -98.1102. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Canadian County, OK 14 km (9 mi) NW of here earthquakes near Canadian County
Kingfisher County, OK 40 km (25 mi) SSW of here earthquakes near Kingfisher County
Blaine County, OK 41 km (25 mi) SE of here earthquakes near Blaine County
Caddo County, OK 56 km (35 mi) NNE of here earthquakes near Caddo County
Oklahoma County, OK 64 km (40 mi) W of here earthquakes near Oklahoma County
Logan County, OK 68 km (42 mi) WSW of here earthquakes near Logan County

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

Aftershocks so far

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

  1. 1.8 7 km NNW of Calumet, Oklahoma
  2. 1.7 14 km W of Greenfield, Oklahoma
  3. 1.9 9 km WSW of Minco, Oklahoma
  4. 2.1 4 km SSW of Union City, Oklahoma
  5. 1.9 4 km SSW of Union City, Oklahoma
  6. 1.6 3 km SSW of Union City, Oklahoma
  7. 1.5 15 km W of Union City, Oklahoma
  8. 1.7 6 km NW of Minco, Oklahoma
  9. 1.5 5 km NW of Minco, Oklahoma
  10. 1.5 4 km SSW of Union City, Oklahoma
  11. 1.9 4 km WSW of Piedmont, Oklahoma
  12. 1.7 4 km SSW of Union City, Oklahoma
  13. 1.6 3 km SSW of Union City, Oklahoma
  14. 1.6 4 km SSW of Union City, Oklahoma
  15. 1.9 4 km NNW of Minco, 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.