QuakeIndex

quarry blast · reviewed by a seismologist

M 1.8ml

2 km WSW of Hulbert, Oklahoma

· 0.0 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cherokee County 16 kmWagoner County 32 kmMuskogee County 39 kmMayes County 43 kmAdair County 47 kmSequoyah County 60 kmDelaware County 62 kmRogers County 64 kmTulsa County 73 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, 16 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1815 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 13 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 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. This earthquake M 1.8 about 13 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 35.9215, -95.1677. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cherokee County, OK 16 km (10 mi) W of here earthquakes near Cherokee County
Wagoner County, OK 32 km (20 mi) E of here earthquakes near Wagoner County
Muskogee County, OK 39 km (24 mi) NNE of here earthquakes near Muskogee County
Mayes County, OK 43 km (27 mi) S of here earthquakes near Mayes County
Adair County, OK 47 km (29 mi) W of here earthquakes near Adair County
Sequoyah County, OK 60 km (37 mi) NW of here earthquakes near Sequoyah 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. 1.5 2 km S of Hulbert, Oklahoma
  2. 1.5 1 km S of Hulbert, Oklahoma
  3. 1.6 2 km SE of Zeb, Oklahoma
  4. 1.6 4 km SSW of Hulbert, Oklahoma
  5. 1.5 1 km ESE of Rocky Mountain, Oklahoma
  6. 1.7 1 km SSW of Hulbert, Oklahoma
  7. 1.6 2 km SW of Hulbert, Oklahoma
  8. 1.5 1 km S of Hulbert, Oklahoma
  9. 2.0 Oklahoma
  10. 1.8 Oklahoma
  11. 1.8 2 km NNE of Zeb, Oklahoma
  12. 1.5 1 km W of Hulbert, Oklahoma
  13. 1.6 2 km SSW of Hulbert, Oklahoma
  14. 1.7 1 km SE of Zeb, Oklahoma
  15. 1.6 1 km SW 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

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