QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Oklahoma

· 2.4 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hughes County 6 kmSeminole County 31 kmPontotoc County 49 kmOkfuskee County 49 kmCoal County 49 kmPittsburg County 52 kmPottawatomie County 63 kmMcIntosh County 69 kmAtoka County 75 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
2.4 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Hughes County, 6 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1349 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 35.0260, -96.3040. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hughes County, OK 6 km (4 mi) WSW of here earthquakes near Hughes County
Seminole County, OK 31 km (19 mi) ESE of here earthquakes near Seminole County
Pontotoc County, OK 49 km (30 mi) NE of here earthquakes near Pontotoc County
Okfuskee County, OK 49 km (30 mi) S of here earthquakes near Okfuskee County
Coal County, OK 49 km (31 mi) N of here earthquakes near Coal County
Pittsburg County, OK 52 km (32 mi) WNW of here earthquakes near Pittsburg County

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

Aftershocks so far

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

  1. 1.8 12 km SSW of Hanna, Oklahoma
  2. 2.0 12 km SSW of Hanna, Oklahoma
  3. 1.5 5 km NW of Horntown, Oklahoma
  4. 2.2 5 km SW of Spaulding, Oklahoma
  5. 1.5 7 km NNW of Savanna, Oklahoma
  6. 2.0 8 km NNW of Savanna, Oklahoma
  7. 1.6 9 km W of McAlester, Oklahoma
  8. 1.6 7 km NNW of Savanna, Oklahoma
  9. 2.4 8 km N of Savanna, Oklahoma
  10. 1.5 6 km N of Savanna, Oklahoma
  11. 1.7 4 km WSW of Arpelar, Oklahoma
  12. 2.3 7 km E of Ada, Oklahoma
  13. 1.8 5 km ESE of Horntown, Oklahoma
  14. 3.4 9 km N of Stonewall, Oklahoma
  15. 1.6 9 km SSE of Ada, 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.