QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

Earthquake near Perry, OK

No earthquake was likely felt in Perry in the 24 hours to 8:44 am CST (14:44 UTC). The last one was M 3.4, 102 km (63 mi) SW, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Perry

This page: a magnitude 2.7 earthquake was recorded 11 km (7 mi) southeast of Perry, OK, at 3:27 am CDT on 7 April 2017 (08:27 UTC), 5.6 km deep.

USGS: 10 km SE of Perry, Oklahoma

90 km (56 mi) NNE of Oklahoma City, OK · 16 km (10 mi) NW of Stillwater, OK

3:27 am CDT, Apr 7, 2017 · · 5.6 km deep · released about 340 lb of TNT

10 km30 km60 km120 km N Noble County 17 kmPayne County 26 kmLogan County 43 kmPawnee County 45 kmGarfield County 56 kmKay County 65 kmLincoln County 65 kmKingfisher County 74 kmOklahoma County 78 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
3:27 am CDT on 7 April 2017 ()
Where
11 km (7 mi) southeast of Perry, OK · earthquakes near Perry
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.7 (ml)
Depth
5.6 km below the surface
Felt
no reports yet
Nearest
Noble County, 17 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3428 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 56 km (35 mi) from the epicentre. In Perry, 11 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 11 km, intensity III · Stillwater 18 km, intensity III · Perkins 32 km, intensity II · Langston 33 km, intensity II · Pawnee 37 km, intensity II · Guthrie 45 km, intensity II · Yale 46 km, intensity II · Cushing 47 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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.

For this area

The largest earthquake within 50 km since 2016 was M 5.8 on 2016-09-03 — about 45,000 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 36.2349, -97.1916. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Noble County, OK 17 km (11 mi) NNW earthquakes near Noble County
Payne County, OK 26 km (16 mi) SE earthquakes near Payne County
Logan County, OK 43 km (26 mi) SSW earthquakes near Logan County
Pawnee County, OK 45 km (28 mi) ENE earthquakes near Pawnee County
Garfield County, OK 56 km (35 mi) WNW earthquakes near Garfield County
Kay County, OK 65 km (40 mi) N earthquakes near Kay County

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

Aftershocks so far

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

  1. 2.9 4 km W of Lucien, Oklahoma
  2. 3.1 9 km NW of Pawnee, Oklahoma
  3. 2.9 4 km WNW of Lucien, Oklahoma
  4. 2.5 5 km WNW of Lucien, Oklahoma
  5. 2.9 4 km W of Lucien, Oklahoma
  6. 3.8 4 km W of Lucien, Oklahoma
  7. 2.5 4 km WNW of Lucien, Oklahoma
  8. 3.7 4 km W of Lucien, Oklahoma
  9. 2.9 5 km NNE of Stillwater, Oklahoma
  10. 2.0 4 km NNE of Stillwater, Oklahoma
  11. 2.5 9 km E of Perry, Oklahoma
  12. 2.5 4 km WNW of Lucien, Oklahoma
  13. 2.5 2 km SSE of Cushing, Oklahoma
  14. 2.7 14 km NW of Pawnee, Oklahoma
  15. 3.3 6 km SE of Meridian, 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.