QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

5 km NW of Horntown, Oklahoma

· 22 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hughes County 8 kmSeminole County 29 kmOkfuskee County 39 kmPittsburg County 54 kmPontotoc County 57 kmCoal County 60 kmPottawatomie County 61 kmMcIntosh County 63 kmOkmulgee County 65 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
22 km below the surface
Felt
no reports yet
Nearest
Hughes County, 8 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 601 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 6.2 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 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 35.1197, -96.2925. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hughes County, OK 8 km (5 mi) NNW of here earthquakes near Hughes County
Seminole County, OK 29 km (18 mi) E of here earthquakes near Seminole County
Okfuskee County, OK 39 km (24 mi) S of here earthquakes near Okfuskee County
Pittsburg County, OK 54 km (34 mi) WNW of here earthquakes near Pittsburg County
Pontotoc County, OK 57 km (36 mi) NE of here earthquakes near Pontotoc County
Coal County, OK 60 km (37 mi) N of here earthquakes near Coal County

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

Aftershocks so far

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

  1. 1.6 7 km WNW of Arpelar, Oklahoma
  2. 1.6 11 km SE of Bowlegs, Oklahoma
  3. 1.6 13 km SSW of Indianola, Oklahoma
  4. 1.8 14 km NNE of Arpelar, Oklahoma
  5. 1.6 14 km SSW of Indianola, Oklahoma
  6. 1.6 6 km E of Francis, Oklahoma
  7. 1.9 5 km S of Ashland, Oklahoma
  8. 2.0 7 km ESE of Salem, Oklahoma
  9. 1.8 12 km SSW of Hanna, Oklahoma
  10. 2.0 12 km SSW of Hanna, 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.