QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

9 km WSW of El Reno, Oklahoma

· 4.6 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Canadian County 8 kmCaddo County 47 kmKingfisher County 52 kmGrady County 54 kmBlaine County 56 kmOklahoma County 58 kmLogan County 71 kmCleveland County 72 kmMcClain County 75 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
4.6 km below the surface
Felt
no reports yet
Nearest
Canadian County, 8 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2120 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 35.4890, -98.0420. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Canadian County, OK 8 km (5 mi) SW of here earthquakes near Canadian County
Caddo County, OK 47 km (29 mi) NE of here earthquakes near Caddo County
Kingfisher County, OK 52 km (32 mi) S of here earthquakes near Kingfisher County
Grady County, OK 54 km (33 mi) NNW of here earthquakes near Grady County
Blaine County, OK 56 km (35 mi) SE of here earthquakes near Blaine County
Oklahoma County, OK 58 km (36 mi) W of here earthquakes near Oklahoma County

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

Aftershocks so far

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

  1. 2.6 3 km SSE of Union City, Oklahoma
  2. 1.9 3 km SSE of Union City, Oklahoma
  3. 1.7 3 km SE of Union City, Oklahoma
  4. 2.2 3 km SSE of Union City, Oklahoma
  5. 2.4 8 km SE of Loyal, Oklahoma
  6. 1.9 8 km NE of Union City, Oklahoma
  7. 1.5 6 km NE of Union City, Oklahoma
  8. 1.7 14 km SSW of Loyal, Oklahoma
  9. 1.5 15 km SSW of Loyal, Oklahoma
  10. 1.6 14 km SSW of Loyal, Oklahoma
  11. 1.5 14 km SSW of Loyal, Oklahoma
  12. 2.2 5 km E of Union City, Oklahoma
  13. 1.6 15 km SSW of Loyal, Oklahoma
  14. 1.5 4 km E of Union City, Oklahoma
  15. 1.6 5 km E 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.