QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

11 km NW of Watonga, Oklahoma

· 7.9 km deep · released about 25 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Blaine County 9 kmMajor County 44 kmDewey County 46 kmKingfisher County 52 kmCuster County 53 kmCanadian County 63 kmWashita County 82 kmGarfield County 83 kmCaddo 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 1.9 (ml)
Depth
7.9 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Blaine County, 9 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2388 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 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 420,000× the energy of this one
  3. Around the size people start to feel M 3.0 38× the energy of this one
  4. This earthquake M 1.9 about 25 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 35.9158, -98.5123. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Blaine County, OK 9 km (5 mi) WNW of here earthquakes near Blaine County
Major County, OK 44 km (27 mi) S of here earthquakes near Major County
Dewey County, OK 46 km (28 mi) E of here earthquakes near Dewey County
Kingfisher County, OK 52 km (32 mi) W of here earthquakes near Kingfisher County
Custer County, OK 53 km (33 mi) NE of here earthquakes near Custer County
Canadian County, OK 63 km (39 mi) NW of here earthquakes near Canadian County

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

Aftershocks so far

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

  1. 1.6 9 km W of Fairview, Oklahoma
  2. 2.3 3 km NNE of Okeene, Oklahoma
  3. 1.5 3 km NNE of Okeene, Oklahoma
  4. 2.1 3 km NNE of Okeene, Oklahoma
  5. 2.1 3 km NNE of Okeene, Oklahoma
  6. 1.7 11 km WNW of Okeene, Oklahoma
  7. 1.8 Oklahoma
  8. 1.8 12 km NW of Watonga, Oklahoma
  9. 2.0 9 km W of Fairview, Oklahoma
  10. 2.6 7 km NNE of Loyal, Oklahoma
  11. 1.6 9 km W of Fairview, Oklahoma
  12. 1.9 5 km S of Canton, Oklahoma
  13. 1.9 5 km NW of Ames, Oklahoma
  14. 2.0 2 km WSW of Fairview, Oklahoma
  15. 2.6 2 km WSW of Fairview, 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 1,700 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.