QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

Earthquake near Perry, OK

No earthquake was likely felt in Perry in the 24 hours to 3:37 pm CST (21:37 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 2.5 earthquake was recorded 9 km (5 mi) southwest of Perry, OK, at 10:40 pm CDT on 18 July 2016 (03:40 UTC), 5.0 km deep.

USGS: 8 km SW of Perry, Oklahoma

86 km (54 mi) N of Oklahoma City, OK · 27 km (17 mi) WNW of Stillwater, OK

10:40 pm CDT, Jul 18, 2016 · · 5.0 km deep · released about 170 lb of TNT

Every earthquake near Perry Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Noble County 20 kmLogan County 36 kmPayne County 37 kmGarfield County 43 kmPawnee County 59 kmKingfisher County 61 kmKay County 68 kmLincoln County 72 kmGrant County 74 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
10:40 pm CDT on 18 July 2016 ()
Where
9 km (5 mi) southwest of Perry, OK · earthquakes near Perry
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.5 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Noble County, 20 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3708 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 46 km (29 mi) from the epicentre. In Perry, 9 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 9 km, intensity III · Stillwater 29 km, intensity II · Langston 33 km, intensity II · Crescent 38 km, intensity II · Guthrie 40 km, intensity II · Perkins 40 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 4.2 on 2016-03-29 — about 350 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 36.2296, -97.3472. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Noble County, OK 20 km (12 mi) NNE earthquakes near Noble County
Logan County, OK 36 km (23 mi) SSW earthquakes near Logan County
Payne County, OK 37 km (23 mi) ESE earthquakes near Payne County
Garfield County, OK 43 km (27 mi) WNW earthquakes near Garfield County
Pawnee County, OK 59 km (37 mi) E earthquakes near Pawnee County
Kingfisher County, OK 61 km (38 mi) WSW earthquakes near Kingfisher County

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

Aftershocks so far

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

  1. 3.6 8 km NE of Marshall, Oklahoma
  2. 3.6 2 km NW of Fairmont, Oklahoma
  3. 2.4 10 km NE of Crescent, Oklahoma
  4. 2.5 5 km SSE of Perry, Oklahoma
  5. 2.5 4 km SSE of Covington, Oklahoma
  6. 2.5 4 km SSE of Covington, Oklahoma
  7. 2.7 4 km SSE of Covington, Oklahoma
  8. 2.7 11 km WNW of Orlando, Oklahoma
  9. 2.5 7 km WSW of Red Rock, Oklahoma
  10. 2.5 1 km WSW of Douglas, Oklahoma
  11. 2.7 1 km W of Douglas, Oklahoma
  12. 2.9 2 km NNW of Fairmont, Oklahoma
  13. 2.9 4 km SSE of Covington, Oklahoma
  14. 2.5 14 km SSE of Billings, Oklahoma
  15. 3.1 6 km NNW of Red Rock, 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.