QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Oklahoma

· 4.0 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kay County 27 kmGrant County 32 kmSumner County 42 kmNoble County 56 kmGarfield County 62 kmHarper County 66 kmCowley County 68 kmAlfalfa County 80 kmPawnee County 90 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 1.7 (ml)
Depth
4.0 km below the surface
Felt
no reports yet
Nearest
Kay County, 27 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2344 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 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 36.8623, -97.4410. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kay County, OK 27 km (17 mi) WNW of here earthquakes near Kay County
Grant County, OK 32 km (20 mi) ENE of here earthquakes near Grant County
Sumner County, KS 42 km (26 mi) S of here earthquakes near Sumner County
Noble County, OK 56 km (35 mi) NNW of here earthquakes near Noble County
Garfield County, OK 62 km (39 mi) NNE of here earthquakes near Garfield County
Harper County, KS 66 km (41 mi) ESE of here earthquakes near Harper County

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

Aftershocks so far

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

  1. 1.8 4 km SSW of Braman, Oklahoma
  2. 2.3 1 km SSW of Renfrow, Oklahoma
  3. 1.5 9 km WSW of Hunnewell, Kansas
  4. 1.8 10 km W of Lamont, Oklahoma
  5. 1.6 6 km NNE of Medford, Oklahoma
  6. 2.4 5 km S of Bluff City, Kansas
  7. 2.1 10 km W of Lamont, Oklahoma
  8. 1.8 9 km ESE of Jefferson, Oklahoma
  9. 1.6 10 km N of Deer Creek, Oklahoma
  10. 1.7 6 km N of Nardin, Oklahoma
  11. 1.7 7 km N of Nardin, Oklahoma
  12. 3.7 6 km N of Nardin, Oklahoma
  13. 2.9 10 km ESE of Jefferson, Oklahoma
  14. 1.9 10 km ESE of Jefferson, Oklahoma
  15. 1.5 5 km WNW of Braman, 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 4.4 on 2019-05-17 — it released about 9,800 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.