QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

5 km N of Bridge Creek, Oklahoma

· 5.0 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grady County 32 kmCanadian County 37 kmCleveland County 38 kmMcClain County 39 kmOklahoma County 42 kmCaddo County 60 kmPottawatomie County 71 kmGarvin County 74 kmLogan County 75 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
3 reports · strongest reported intensity III
Nearest
Grady County, 32 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2650 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 35.2804, -97.7304. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grady County, OK 32 km (20 mi) NNE of here earthquakes near Grady County
Canadian County, OK 37 km (23 mi) SE of here earthquakes near Canadian County
Cleveland County, OK 38 km (24 mi) WNW of here earthquakes near Cleveland County
McClain County, OK 39 km (24 mi) NW of here earthquakes near McClain County
Oklahoma County, OK 42 km (26 mi) SW of here earthquakes near Oklahoma County
Caddo County, OK 60 km (38 mi) ENE of here earthquakes near Caddo County

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

Aftershocks so far

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

  1. 1.9 4 km E of Tuttle, Oklahoma
  2. 2.0 5 km E of Tuttle, Oklahoma
  3. 1.8 0 km WNW of Bridge Creek, Oklahoma
  4. 2.0 3 km ESE of Blanchard, Oklahoma
  5. 1.9 5 km SE of Chickasha, Oklahoma
  6. 1.5 3 km WNW of Bridge Creek, Oklahoma
  7. 1.7 10 km SSW of Okarche, Oklahoma
  8. 1.9 1 km W of Bridge Creek, Oklahoma
  9. 1.6 1 km WNW of Bridge Creek, Oklahoma
  10. 1.6 8 km SSE of Okarche, Oklahoma
  11. 2.0 9 km N of El Reno, Oklahoma
  12. 1.8 10 km N of El Reno, Oklahoma
  13. 2.1 9 km N of El Reno, Oklahoma
  14. 2.1 10 km N of El Reno, Oklahoma
  15. 1.7 6 km SW of Minco, 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.