QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

Earthquake near Pawnee, OK

No earthquake was likely felt in Pawnee in the 24 hours to 5:14 am CST (11:14 UTC). The last one was M 3.4, 138 km (86 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 Pawnee

This page: a magnitude 2.8 earthquake was recorded 11 km (7 mi) northwest of Pawnee, OK, at 3:56 am CDT on 22 September 2023 (08:56 UTC), 7.3 km deep. 1 person has reported feeling it to USGS.

USGS: 10 km NW of Pawnee, Oklahoma

36 km (22 mi) NNE of Stillwater, OK · 120 km (75 mi) NNE of Oklahoma City, OK

3:56 am CDT, Sep 22, 2023 · · 7.3 km deep · released about 530 lb of TNT

10 km30 km60 km120 km N Pawnee County 20 kmNoble County 32 kmPayne County 38 kmOsage County 48 kmKay County 51 kmCreek County 72 kmLogan County 76 kmLincoln County 79 kmGarfield County 82 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
3:56 am CDT on 22 September 2023 ()
Where
11 km (7 mi) northwest of Pawnee, OK · earthquakes near Pawnee
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.8 (ml)
Depth
7.3 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Pawnee County, 20 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1028 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 63 km (39 mi) from the epicentre. In Pawnee, 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: Pawnee 11 km, intensity III · Yale 37 km, intensity II · Stillwater 37 km, intensity II · Ponca City 38 km, intensity II · Perry 39 km, intensity II · Cushing 49 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 530 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 29,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 20,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.8× the energy of this one
  4. This earthquake M 2.8 about 530 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 29,000 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 36.4143, -96.8765. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Pawnee County, OK 20 km (12 mi) SE earthquakes near Pawnee County
Noble County, OK 32 km (20 mi) W earthquakes near Noble County
Payne County, OK 38 km (24 mi) SSW earthquakes near Payne County
Osage County, OK 48 km (30 mi) ENE earthquakes near Osage County
Kay County, OK 51 km (31 mi) NNW earthquakes near Kay County
Creek County, OK 72 km (45 mi) SE earthquakes near Creek County

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

Aftershocks so far

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

  1. 1.5 7 km SE of Perry, Oklahoma
  2. 1.6 7 km SE of Perry, Oklahoma
  3. 1.6 3 km WNW of Cushing, Oklahoma
  4. 1.7 3 km W of Cushing, Oklahoma
  5. 2.0 3 km WNW of Cushing, Oklahoma
  6. 1.9 13 km NW of Pawnee, Oklahoma
  7. 1.7 13 km NW of Pawnee, Oklahoma
  8. 2.8 11 km NW of Morrison, Oklahoma
  9. 1.7 4 km W of Cushing, Oklahoma
  10. 1.7 3 km W of Cushing, Oklahoma
  11. 1.8 3 km W of Cushing, Oklahoma
  12. 2.0 5 km W of Ponca City, Oklahoma
  13. 2.1 4 km W of Ponca City, Oklahoma
  14. 1.7 13 km NW of Pawnee, Oklahoma
  15. 2.0 5 km W of Ponca City, 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.