QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

4 km E of Asher, Oklahoma

· 12 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Pottawatomie County 26 kmSeminole County 31 kmPontotoc County 34 kmCleveland County 48 kmGarvin County 50 kmMcClain County 52 kmHughes County 57 kmMurray County 58 kmCoal County 70 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
12 km below the surface
Felt
no reports yet
Nearest
Pottawatomie County, 26 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 832 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 14 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 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 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 34.9857, -96.8760. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Pottawatomie County, OK 26 km (16 mi) SSE of here earthquakes near Pottawatomie County
Seminole County, OK 31 km (20 mi) SW of here earthquakes near Seminole County
Pontotoc County, OK 34 km (21 mi) NNW of here earthquakes near Pontotoc County
Cleveland County, OK 48 km (30 mi) ESE of here earthquakes near Cleveland County
Garvin County, OK 50 km (31 mi) NE of here earthquakes near Garvin County
McClain County, OK 52 km (33 mi) E of here earthquakes near McClain County

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

Aftershocks so far

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

  1. 1.6 11 km SE of Bowlegs, Oklahoma
  2. 3.5 2 km ESE of Johnson, Oklahoma
  3. 1.7 6 km SW of Stonewall, Oklahoma
  4. 1.6 6 km E of Francis, Oklahoma
  5. 1.6 3 km SW of Fitzhugh, Oklahoma
  6. 2.2 5 km SW of Spaulding, Oklahoma
  7. 2.3 7 km E of Ada, Oklahoma
  8. 1.5 4 km NE of Fitzhugh, Oklahoma
  9. 1.8 4 km ESE of Dale, Oklahoma
  10. 1.7 11 km ENE of Pauls Valley, Oklahoma
  11. 3.4 9 km N of Stonewall, Oklahoma
  12. 1.6 7 km NE of Fitzhugh, 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.