QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

Earthquake near Stillwater, OK

No earthquake was likely felt in Stillwater in the 24 hours to 3:46 pm CST (21:46 UTC). The last one was M 3.4, 105 km (65 mi) WSW, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Stillwater

This page: a magnitude 3.2 earthquake was recorded 38 km (24 mi) west of Stillwater, OK, at 11:46 am CST on 6 December 2017 (17:46 UTC), 7.6 km deep. 2 people have reported feeling it to USGS.

USGS: 9 km W of Orlando, Oklahoma

76 km (48 mi) N of Oklahoma City, OK · 37 km (23 mi) W of Stillwater, OK

11:46 am CST, Dec 6, 2017 · · 7.6 km deep · released about 1,900 lb of TNT

Every earthquake near Stillwater Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Logan County 27 kmNoble County 34 kmGarfield County 37 kmKingfisher County 46 kmPayne County 46 kmOklahoma County 67 kmPawnee County 73 kmLincoln County 74 kmGrant County 76 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
11:46 am CST on 6 December 2017 ()
Where
38 km (24 mi) west of Stillwater, OK · earthquakes near Stillwater
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 3.2 (ml)
Depth
7.6 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Logan County, 27 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3179 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 190 km (118 mi) from the epicentre. In Stillwater, 38 km away, the estimate is intensity III (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Perry 23 km, intensity III · Crescent 25 km, intensity III · Langston 31 km, intensity III · Guthrie 31 km, intensity III · Hennessey 38 km, intensity III · Stillwater 38 km, intensity III · Enid 44 km, intensity III · Perkins 45 km, intensity III. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1,900 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,600× the energy of this one
  4. This earthquake M 3.2 about 1,900 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 2× more

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.

For this area

The largest earthquake within 50 km since 2016 was M 4.2 on 2016-03-29 — about 32 times the energy of this one.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 36.1543, -97.4844. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Logan County, OK 27 km (17 mi) S earthquakes near Logan County
Noble County, OK 34 km (21 mi) NE earthquakes near Noble County
Garfield County, OK 37 km (23 mi) NW earthquakes near Garfield County
Kingfisher County, OK 46 km (29 mi) WSW earthquakes near Kingfisher County
Payne County, OK 46 km (29 mi) E earthquakes near Payne County
Oklahoma County, OK 67 km (42 mi) S earthquakes near Oklahoma 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. 2.9 6 km N of Dover, Oklahoma
  2. 2.4 5 km N of Dover, Oklahoma
  3. 3.0 6 km N of Dover, Oklahoma
  4. 3.0 6 km NNE of Dover, Oklahoma
  5. 2.3 6 km N of Dover, Oklahoma
  6. 3.2 6 km N of Dover, Oklahoma
  7. 2.7 6 km N of Dover, Oklahoma
  8. 2.6 5 km N of Dover, Oklahoma
  9. 2.3 5 km N of Dover, Oklahoma
  10. 3.2 6 km N of Dover, Oklahoma
  11. 3.7 5 km N of Dover, Oklahoma
  12. 2.7 4 km N of Breckinridge, Oklahoma
  13. 2.5 4 km WNW of Lucien, Oklahoma
  14. 2.6 9 km ENE of Marshall, Oklahoma
  15. 2.7 5 km N of Dover, 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.