QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

9 km SW of Yukon, Oklahoma

· 6.0 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Canadian County 16 kmOklahoma County 41 kmGrady County 48 kmCleveland County 55 kmKingfisher County 56 kmCaddo County 58 kmMcClain County 60 kmLogan County 62 kmBlaine County 71 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
6.0 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Canadian County, 16 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1626 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

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 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× 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 35.4530, -97.8438. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Canadian County, OK 16 km (10 mi) SE of here earthquakes near Canadian County
Oklahoma County, OK 41 km (25 mi) WSW of here earthquakes near Oklahoma County
Grady County, OK 48 km (30 mi) N of here earthquakes near Grady County
Cleveland County, OK 55 km (34 mi) WNW of here earthquakes near Cleveland County
Kingfisher County, OK 56 km (35 mi) S of here earthquakes near Kingfisher County
Caddo County, OK 58 km (36 mi) ENE of here earthquakes near Caddo County

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

Aftershocks so far

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

  1. 1.6 10 km NE of Ninnekah, Oklahoma
  2. 2.0 9 km ESE of Chickasha, Oklahoma
  3. 1.9 9 km W of Kingfisher, Oklahoma
  4. 1.7 4 km WNW of Blanchard, Oklahoma
  5. 1.7 5 km NW of Blanchard, Oklahoma
  6. 2.9 11 km ESE of Chickasha, Oklahoma
  7. 1.7 11 km ESE of Chickasha, Oklahoma
  8. 1.6 9 km SE of Chickasha, Oklahoma
  9. 2.1 7 km E of Union City, Oklahoma
  10. 2.0 6 km E of Union City, Oklahoma
  11. 1.8 9 km E of Chickasha, Oklahoma
  12. 1.5 8 km SW of Yukon, Oklahoma
  13. 1.6 8 km SSE of Kingfisher, Oklahoma
  14. 1.6 7 km E of El Reno, Oklahoma
  15. 1.7 9 km SE of El Reno, 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 4.2 on 2016-01-01 — it released about 4,100 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.