QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

14 km SSW of Manchester, Oklahoma

· 5.6 km deep · released about 950 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alfalfa County 26 kmGrant County 29 kmHarper County 35 kmGarfield County 62 kmBarber County 65 kmSumner County 67 kmWoods County 70 kmMajor County 74 kmKingman County 76 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 3.0 (ml)
Depth
5.6 km below the surface
Felt
no reports yet
Nearest
Alfalfa County, 26 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3428 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 36.8736, -98.0954. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alfalfa County, OK 26 km (16 mi) NE of here earthquakes near Alfalfa County
Grant County, OK 29 km (18 mi) WNW of here earthquakes near Grant County
Harper County, KS 35 km (22 mi) S of here earthquakes near Harper County
Garfield County, OK 62 km (38 mi) NNW of here earthquakes near Garfield County
Barber County, KS 65 km (40 mi) SE of here earthquakes near Barber County
Sumner County, KS 67 km (42 mi) SW of here earthquakes near Sumner County

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

Aftershocks so far

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

  1. 2.6 10 km ESE of Jefferson, Oklahoma
  2. 1.6 3 km E of Harper, Kansas
  3. 2.9 Oklahoma
  4. 2.5 6 km NE of Attica, Kansas
  5. 3.2 9 km W of Bluff City, Kansas
  6. 2.8 7 km NE of Attica, Kansas
  7. 2.4 7 km ENE of Attica, Kansas
  8. 2.1 6 km E of Manchester, Oklahoma
  9. 3.2 10 km ESE of Jefferson, Oklahoma
  10. 3.3 10 km ESE of Jefferson, Oklahoma
  11. 2.8 8 km SSE of Byron, Oklahoma
  12. 1.7 9 km SSE of Anthony, Kansas
  13. 2.7 8 km WNW of Deer Creek, Oklahoma
  14. 2.8 8 km SSE of Byron, Oklahoma
  15. 2.7 0 km WSW of Wakita, 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 4.0 on 2016-11-25 — it released about 32 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.