QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

1 km SSW of Wakita, Oklahoma

· 7.6 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 16 kmHarper County 37 kmAlfalfa County 39 kmSumner County 56 kmGarfield County 57 kmKay County 70 kmBarber County 78 kmKingman County 78 kmNoble County 82 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
7.6 km below the surface
Felt
1 report
Nearest
Grant County, 16 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1832 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 16 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 5.8 930,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 660,000× the energy of this one
  3. Around the size people start to feel M 3.0 59× the energy of this one
  4. This earthquake M 1.8 about 16 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 36.8740, -97.9277. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 16 km (10 mi) NW of here earthquakes near Grant County
Harper County, KS 37 km (23 mi) SSE of here earthquakes near Harper County
Alfalfa County, OK 39 km (24 mi) ENE of here earthquakes near Alfalfa County
Sumner County, KS 56 km (35 mi) SW of here earthquakes near Sumner County
Garfield County, OK 57 km (35 mi) NNW of here earthquakes near Garfield County
Kay County, OK 70 km (44 mi) W of here earthquakes near Kay 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. 1.6 6 km NW of Medford, Oklahoma
  2. 2.4 6 km NW of Medford, Oklahoma
  3. 1.7 6 km NW of Medford, Oklahoma
  4. 4.5 7 km NW of Medford, Oklahoma
  5. 1.6 6 km NW of Medford, Oklahoma
  6. 1.8 3 km S of Renfrow, Oklahoma
  7. 1.8 4 km NE of Cherokee, Oklahoma
  8. 2.7 10 km ESE of Jefferson, Oklahoma
  9. 1.5 4 km NE of Cherokee, Oklahoma
  10. 2.0 7 km E of Nescatunga, Oklahoma
  11. 1.6 10 km ESE of Jefferson, Oklahoma
  12. 1.9 8 km WSW of Hunnewell, Kansas
  13. 1.6 2 km NNW of Hunter, Oklahoma
  14. 1.6 12 km WSW of Hunnewell, Kansas
  15. 2.1 11 km WSW of Hunnewell, 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 4.4 on 2019-05-17 — it released about 7,400 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.