QuakeIndex

quarry blast · reviewed by a seismologist

M 1.8ml

2 km NNE of Zeb, Oklahoma

· 0.0 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cherokee County 8 kmAdair County 36 kmMuskogee County 40 kmWagoner County 45 kmSequoyah County 46 kmMayes County 54 kmDelaware County 65 kmHaskell County 68 kmWashington County 76 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
0.0 km below the surface
Felt
no reports yet
Nearest
Cherokee County, 8 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1357 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as quarry blast, not an earthquake.

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 35.8405, -95.0412. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cherokee County, OK 8 km (5 mi) SSW of here earthquakes near Cherokee County
Adair County, OK 36 km (22 mi) W of here earthquakes near Adair County
Muskogee County, OK 40 km (25 mi) NE of here earthquakes near Muskogee County
Wagoner County, OK 45 km (28 mi) ESE of here earthquakes near Wagoner County
Sequoyah County, OK 46 km (28 mi) NW of here earthquakes near Sequoyah County
Mayes County, OK 54 km (34 mi) SSE of here earthquakes near Mayes County

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

Aftershocks so far

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

  1. 1.7 3 km SW of Hulbert, Oklahoma
  2. 1.7 3 km SW of Hulbert, Oklahoma
  3. 1.9 2 km SE of Zeb, Oklahoma
  4. 1.6 2 km WSW of Hulbert, Oklahoma
  5. 1.7 2 km SE of Zeb, Oklahoma
  6. 1.5 4 km WSW of Hulbert, Oklahoma
  7. 1.5 3 km WSW of Paradise Hill, Oklahoma
  8. 1.6 2 km WSW of Hulbert, Oklahoma
  9. 1.5 3 km NE of Sportsmen Acres, Oklahoma
  10. 1.7 3 km WSW of Hulbert, Oklahoma
  11. 1.7 3 km SSE of Zeb, Oklahoma
  12. 1.7 3 km WSW of Hulbert, Oklahoma
  13. 1.5 3 km ESE of Sour John, Oklahoma
  14. 2.0 3 km SE of Zeb, Oklahoma
  15. 1.7 4 km SSW of Hulbert, 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

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