QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

15 km WSW of Leedey, Oklahoma

· 5.0 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Roger Mills County 25 kmEllis County 47 kmDewey County 48 kmCuster County 52 kmBeckham County 65 kmWoodward County 68 kmHemphill County 69 kmWashita County 78 kmWheeler County 83 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
5.0 km below the surface
Felt
no reports yet
Nearest
Roger Mills County, 25 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 319 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 16 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 5.8 970,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 680,000× the energy of this one
  3. Around the size people start to feel M 3.0 61× the energy of this one
  4. This earthquake M 1.8 about 16 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 35.8425, -99.5177. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Roger Mills County, OK 25 km (16 mi) NE of here earthquakes near Roger Mills County
Ellis County, OK 47 km (29 mi) SSE of here earthquakes near Ellis County
Dewey County, OK 48 km (30 mi) WSW of here earthquakes near Dewey County
Custer County, OK 52 km (32 mi) WNW of here earthquakes near Custer County
Beckham County, OK 65 km (41 mi) NNE of here earthquakes near Beckham County
Woodward County, OK 68 km (43 mi) SSW of here earthquakes near Woodward 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. 1.9 11 km ENE of Leedey, 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.