QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

10 km WNW of Okarche, Oklahoma

· 10 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kingfisher County 23 kmCanadian County 28 kmBlaine County 34 kmLogan County 59 kmOklahoma County 65 kmGarfield County 72 kmMajor County 73 kmCaddo County 73 kmCuster 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 1.8 (ml)
Depth
10 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Kingfisher County, 23 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1335 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 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 35.7780, -98.0783. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kingfisher County, OK 23 km (14 mi) SW of here earthquakes near Kingfisher County
Canadian County, OK 28 km (17 mi) NNW of here earthquakes near Canadian County
Blaine County, OK 34 km (21 mi) ESE of here earthquakes near Blaine County
Logan County, OK 59 km (36 mi) WSW of here earthquakes near Logan County
Oklahoma County, OK 65 km (41 mi) WNW of here earthquakes near Oklahoma County
Garfield County, OK 72 km (45 mi) SSW of here earthquakes near Garfield County

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

Aftershocks so far

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

  1. 1.6 13 km WSW of Union City, Oklahoma
  2. 1.8 Oklahoma
  3. 2.1 13 km WSW of Union City, Oklahoma
  4. 1.9 15 km WNW of Minco, Oklahoma
  5. 1.6 13 km WSW of Union City, Oklahoma
  6. 1.5 13 km WSW of Union City, Oklahoma
  7. 1.8 Oklahoma
  8. 2.1 13 km WSW of Union City, Oklahoma
  9. 2.0 13 km WSW of Union City, Oklahoma
  10. 1.7 13 km WSW of Union City, Oklahoma
  11. 1.7 12 km WSW of Union City, Oklahoma
  12. 1.7 14 km WSW of Union City, Oklahoma
  13. 1.6 13 km WSW of Union City, Oklahoma
  14. 1.5 13 km WSW of Union City, Oklahoma
  15. 1.6 8 km WSW of Okarche, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.