QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

4 km SSE of Union City, Oklahoma

· 6.7 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Canadian County 22 kmGrady County 37 kmCaddo County 46 kmOklahoma County 52 kmCleveland County 57 kmMcClain County 57 kmKingfisher County 66 kmBlaine County 74 kmLogan County 76 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 1.5 (ml)
Depth
6.7 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Canadian County, 22 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1937 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 35.3528, -97.9283. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Canadian County, OK 22 km (13 mi) SSE of here earthquakes near Canadian County
Grady County, OK 37 km (23 mi) N of here earthquakes near Grady County
Caddo County, OK 46 km (29 mi) ENE of here earthquakes near Caddo County
Oklahoma County, OK 52 km (32 mi) WSW of here earthquakes near Oklahoma County
Cleveland County, OK 57 km (36 mi) WNW of here earthquakes near Cleveland County
McClain County, OK 57 km (36 mi) NW of here earthquakes near McClain County

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

Aftershocks so far

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

  1. 1.5 5 km ESE of Union City, Oklahoma
  2. 1.6 8 km SW of Dibble, Oklahoma
  3. 2.1 1 km SSW of Verden, Oklahoma
  4. 1.5 2 km ENE of Union City, Oklahoma
  5. 1.6 2 km ENE of Union City, Oklahoma
  6. 1.5 3 km SSE of Blanchard, Oklahoma
  7. 1.7 1 km ESE of Union City, Oklahoma
  8. 1.5 2 km E of Union City, Oklahoma
  9. 1.8 2 km E of Union City, Oklahoma
  10. 1.5 2 km ENE of Union City, Oklahoma
  11. 1.6 2 km E of Union City, Oklahoma
  12. 1.7 2 km ESE of Union City, Oklahoma
  13. 1.6 1 km ESE of Union City, Oklahoma
  14. 1.7 5 km SW of Blanchard, Oklahoma
  15. 1.6 2 km ESE of Union City, 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.