QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

6 km NNE of Watonga, Oklahoma

· 4.8 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Blaine County 5 kmKingfisher County 41 kmMajor County 49 kmCanadian County 53 kmDewey County 58 kmCuster County 62 kmGarfield County 76 kmCaddo County 80 kmLogan County 84 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 1.5 (ml)
Depth
4.8 km below the surface
Felt
no reports yet
Nearest
Blaine County, 5 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 829 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 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 35.8913, -98.3787. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Blaine County, OK 5 km (3 mi) ENE of here earthquakes near Blaine County
Kingfisher County, OK 41 km (25 mi) W of here earthquakes near Kingfisher County
Major County, OK 49 km (31 mi) SSE of here earthquakes near Major County
Canadian County, OK 53 km (33 mi) NW of here earthquakes near Canadian County
Dewey County, OK 58 km (36 mi) E of here earthquakes near Dewey County
Custer County, OK 62 km (39 mi) ENE of here earthquakes near Custer County

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

Aftershocks so far

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

  1. 1.8 2 km N of Kingfisher, Oklahoma
  2. 1.7 2 km N of Kingfisher, Oklahoma
  3. 1.7 3 km NNE of Kingfisher, Oklahoma
  4. 2.9 6 km NNE of Loyal, Oklahoma
  5. 1.6 6 km NNW of Greenfield, Oklahoma
  6. 1.5 10 km NE of Thomas, Oklahoma
  7. 1.6 6 km NNW of Greenfield, Oklahoma
  8. 1.6 6 km NW of Greenfield, Oklahoma
  9. 1.8 6 km NW of Greenfield, Oklahoma
  10. 2.4 7 km NNW of Loyal, Oklahoma
  11. 1.6 4 km SSE of Dover, Oklahoma
  12. 1.7 4 km W of Dover, Oklahoma
  13. 1.6 5 km W of Dover, Oklahoma
  14. 1.9 4 km W of Dover, Oklahoma
  15. 1.6 4 km W of Dover, 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 7,700 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.