QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

5 km SSE of Dover, Oklahoma

· 6.6 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kingfisher County 5 kmLogan County 39 kmCanadian County 45 kmGarfield County 49 kmBlaine County 50 kmOklahoma County 61 kmMajor County 72 kmNoble County 76 kmPayne County 83 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
6.6 km below the surface
Felt
no reports yet
Nearest
Kingfisher County, 5 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 874 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 35.9407, -97.8842. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kingfisher County, OK 5 km (3 mi) ESE of here earthquakes near Kingfisher County
Logan County, OK 39 km (24 mi) W of here earthquakes near Logan County
Canadian County, OK 45 km (28 mi) N of here earthquakes near Canadian County
Garfield County, OK 49 km (31 mi) S of here earthquakes near Garfield County
Blaine County, OK 50 km (31 mi) E of here earthquakes near Blaine County
Oklahoma County, OK 61 km (38 mi) NW of here earthquakes near Oklahoma County

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

Aftershocks so far

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

  1. 1.8 7 km NNW of Calumet, Oklahoma
  2. 1.8 7 km NNW of Calumet, Oklahoma
  3. 2.2 6 km E of Hennessey, Oklahoma
  4. 1.9 4 km WSW of Piedmont, Oklahoma
  5. 1.5 6 km N of Calumet, Oklahoma
  6. 1.5 8 km ESE of Kingfisher, Oklahoma
  7. 2.4 6 km E of Hennessey, Oklahoma
  8. 2.6 8 km ENE of Hennessey, Oklahoma
  9. 1.7 10 km WNW of Okarche, Oklahoma
  10. 1.6 4 km NNW of Mulhall, Oklahoma
  11. 1.6 2 km NNE of Kingfisher, Oklahoma
  12. 1.7 2 km N of Kingfisher, Oklahoma
  13. 1.6 2 km NNE of Kingfisher, Oklahoma
  14. 1.5 13 km NE of Geary, Oklahoma
  15. 1.7 9 km NNE of Marshall, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.6 on 2018-04-09 — it released about 16,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.