QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

9 km W of Loyal, Oklahoma

· 6.7 km deep · released about 98 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Blaine County 21 kmKingfisher County 26 kmMajor County 48 kmCanadian County 52 kmGarfield County 60 kmLogan County 70 kmDewey County 71 kmCuster County 78 kmAlfalfa 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 2.3 (ml)
Depth
6.7 km below the surface
Felt
no reports yet
Nearest
Blaine County, 21 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 162 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 98 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.8× the energy of this one
  4. This earthquake M 2.3 about 98 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 35.9680, -98.2268. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Blaine County, OK 21 km (13 mi) ENE of here earthquakes near Blaine County
Kingfisher County, OK 26 km (16 mi) W of here earthquakes near Kingfisher County
Major County, OK 48 km (30 mi) SE of here earthquakes near Major County
Canadian County, OK 52 km (32 mi) NNW of here earthquakes near Canadian County
Garfield County, OK 60 km (37 mi) SW of here earthquakes near Garfield County
Logan County, OK 70 km (44 mi) W of here earthquakes near Logan County

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

Aftershocks so far

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

  1. 1.6 7 km ENE of Calumet, Oklahoma
  2. 2.4 7 km ENE of Calumet, Oklahoma
  3. 1.5 8 km ENE of Calumet, Oklahoma
  4. 1.9 8 km ENE of Calumet, Oklahoma
  5. 2.0 8 km ENE of Calumet, Oklahoma
  6. 1.8 7 km ENE of Calumet, Oklahoma
  7. 1.7 1 km SSE of Watonga, Oklahoma
  8. 1.7 7 km ENE of Calumet, Oklahoma
  9. 1.6 7 km ENE of Calumet, Oklahoma
  10. 1.8 7 km ENE of Calumet, Oklahoma
  11. 2.0 7 km ENE of Calumet, Oklahoma
  12. 2.7 8 km ENE of Calumet, Oklahoma
  13. 1.6 7 km ENE of Calumet, Oklahoma
  14. 1.9 8 km ENE of Calumet, Oklahoma
  15. 1.7 8 km ENE of Calumet, 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 4.1 on 2016-01-18 — it released about 440 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.