QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6mb_lg

Earthquake near Edmond, OK

No earthquake was likely felt in Edmond in the 24 hours to 4:13 pm CST (22:13 UTC). The last one was M 3.4, 51 km (32 mi) W, at 5:53 am CST on 7 November 2026, estimated intensity III (weak) in town; 23 felt reports to USGS. Every earthquake near Edmond

This page: a magnitude 2.6 earthquake was recorded 43 km (27 mi) northwest of Edmond, OK, at 10:22 pm CDT on 12 August 2017 (03:22 UTC), 2.6 km deep. 1 person has reported feeling it to USGS.

USGS: 12 km ESE of Dover, Oklahoma

59 km (36 mi) NNW of Oklahoma City, OK · 45 km (28 mi) NW of Edmond, OK

10:22 pm CDT, Aug 12, 2017 · · 2.6 km deep · released about 240 lb of TNT

10 km30 km60 km120 km N Kingfisher County 14 kmLogan County 30 kmGarfield County 48 kmCanadian County 48 kmOklahoma County 55 kmBlaine County 59 kmNoble County 69 kmPayne County 74 kmMajor County 79 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
10:22 pm CDT on 12 August 2017 ()
Where
43 km (27 mi) northwest of Edmond, OK · earthquakes near Edmond
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.6 (mb_lg)
Depth
2.6 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Kingfisher County, 14 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3285 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 51 km (32 mi) from the epicentre. In Edmond, 43 km away, the estimate is intensity II (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: Kingfisher 16 km, intensity III · Crescent 17 km, intensity III · Hennessey 21 km, intensity III · Okarche 30 km, intensity II · Guthrie 33 km, intensity II · Edmond 43 km, intensity II · Langston 48 km, intensity II · El Reno 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 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 2016-01-01 — about 250 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 35.9476, -97.7832. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kingfisher County, OK 14 km (8 mi) W earthquakes near Kingfisher County
Logan County, OK 30 km (19 mi) E earthquakes near Logan County
Garfield County, OK 48 km (30 mi) N earthquakes near Garfield County
Canadian County, OK 48 km (30 mi) SSW earthquakes near Canadian County
Oklahoma County, OK 55 km (34 mi) SE earthquakes near Oklahoma County
Blaine County, OK 59 km (36 mi) W earthquakes near Blaine County

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

Aftershocks so far

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

  1. 2.9 5 km WNW of Lucien, Oklahoma
  2. 3.1 4 km W of Lucien, Oklahoma
  3. 3.3 5 km N of Dover, Oklahoma
  4. 2.4 5 km SE of Guthrie, Oklahoma
  5. 2.7 5 km WNW of Lucien, Oklahoma
  6. 2.9 7 km SE of Marshall, Oklahoma
  7. 2.5 7 km SE of Lucien, Oklahoma
  8. 2.8 6 km W of Arcadia, Oklahoma
  9. 2.9 6 km W of Arcadia, Oklahoma
  10. 2.4 6 km W of Arcadia, Oklahoma
  11. 2.8 7 km NNE of Guthrie, Oklahoma
  12. 2.4 12 km ESE of Dover, Oklahoma
  13. 2.7 5 km WNW of Lucien, Oklahoma
  14. 2.7 3 km W of Lucien, Oklahoma
  15. 2.3 3 km NW of Fairmont, 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.