QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

8 km N of Manchester, Oklahoma

· 6.5 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Harper County 14 kmGrant County 39 kmAlfalfa County 45 kmSumner County 53 kmKingman County 55 kmBarber County 59 kmGarfield County 80 kmWoods County 82 kmKay 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 1.7 (ml)
Depth
6.5 km below the surface
Felt
no reports yet
Nearest
Harper County, 14 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3496 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 11 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 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 37.0662, -98.0505. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Harper County, KS 14 km (8 mi) S of here earthquakes near Harper County
Grant County, OK 39 km (24 mi) NW of here earthquakes near Grant County
Alfalfa County, OK 45 km (28 mi) NNE of here earthquakes near Alfalfa County
Sumner County, KS 53 km (33 mi) WSW of here earthquakes near Sumner County
Kingman County, KS 55 km (34 mi) S of here earthquakes near Kingman County
Barber County, KS 59 km (37 mi) ESE of here earthquakes near Barber 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. 2.2 8 km ENE of Attica, Kansas
  2. 1.5 12 km W of Caldwell, Kansas
  3. 2.1 7 km NNE of Attica, Kansas
  4. 1.7 5 km SSE of Freeport, Kansas
  5. 2.6 6 km ENE of Attica, Kansas
  6. 2.3 7 km NE of Attica, Kansas
  7. 1.6 2 km E of Argonia, Kansas
  8. 2.6 8 km E of Nescatunga, Oklahoma
  9. 2.0 7 km SE of Harper, Kansas
  10. 2.2 7 km SE of Harper, Kansas
  11. 1.7 12 km SSE of Milan, Kansas
  12. 2.1 5 km SSE of Freeport, Kansas
  13. 1.6 6 km NE of Milan, Kansas
  14. 1.6 6 km ESE of Harper, Kansas
  15. 3.4 8 km SE of Harper, Kansas

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 2,700 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.