QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

15 km ENE of Fort Supply, Oklahoma

· 4.9 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Woodward County 26 kmHarper County 29 kmWoods County 50 kmEllis County 54 kmComanche County 63 kmClark County 76 kmDewey County 81 kmMajor County 85 kmLipscomb County 86 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 1.7 (ml)
Depth
4.9 km below the surface
Felt
no reports yet
Nearest
Woodward County, 26 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2204 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 36.6275, -99.4132. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Woodward County, OK 26 km (16 mi) NNW of here earthquakes near Woodward County
Harper County, OK 29 km (18 mi) SE of here earthquakes near Harper County
Woods County, OK 50 km (31 mi) WSW of here earthquakes near Woods County
Ellis County, OK 54 km (34 mi) NE of here earthquakes near Ellis County
Comanche County, KS 63 km (39 mi) SSW of here earthquakes near Comanche County
Clark County, KS 76 km (47 mi) SSE of here earthquakes near Clark County

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

Aftershocks so far

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

  1. 1.7 9.2 km SSW of Quinlan, OK
  2. 1.9 8.9 km SSW of Quinlan, OK
  3. 1.5 9.4 km SSW of Quinlan, OK
  4. 1.6 9.1 km SSW of Quinlan, OK
  5. 1.8 10 km NNE of Quinlan, OK
  6. 1.7 9 km NNE of Quinlan, OK
  7. 2.2 10 km NNE of Quinlan, OK
  8. 2.4 10 km NNE of Quinlan, OK
  9. 1.6 9.1 km SSW of Quinlan, OK
  10. 1.9 9 km NNE of Quinlan, OK
  11. 1.6 9 km NNE of Quinlan, OK
  12. 1.5 9.5 km SSW of Quinlan, OK
  13. 1.5 10 km NE of Quinlan, OK
  14. 1.5 10.0 km SW of Quinlan, OK
  15. 1.6 10.1 km SW of Quinlan, OK

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.