QuakeIndex

quarry blast · reviewed by a seismologist

M 1.8ml

4 km ESE of Fairland, Oklahoma

· 0.0 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ottawa County 11 kmCraig County 36 kmDelaware County 39 kmMcDonald County 43 kmNewton County 46 kmCherokee County 48 kmMayes County 62 kmJasper County 66 kmBenton County 66 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
Ottawa County, 11 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 111 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 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
  3. Around the size people start to feel M 3.0 75× 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 36.7402, -94.8022. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ottawa County, OK 11 km (7 mi) S of here earthquakes near Ottawa County
Craig County, OK 36 km (22 mi) E of here earthquakes near Craig County
Delaware County, OK 39 km (24 mi) N of here earthquakes near Delaware County
McDonald County, MO 43 km (27 mi) WNW of here earthquakes near McDonald County
Newton County, MO 46 km (28 mi) WSW of here earthquakes near Newton County
Cherokee County, KS 48 km (30 mi) S of here earthquakes near Cherokee County

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

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

  1. 1.2 3 km ESE of Fairland, 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.